Australian Cattle Dog
Encyclopedia
The Australian Cattle Dog (ACD or Cattle Dog) is a breed of herding dog
Herding dog
A herding dog, also known as a stock dog or working dog, is a type of pastoral dog that either has been trained in herding or belongs to breeds developed for herding...

 originally developed in Australia for droving
Droving
Droving is the practice of moving livestock over large distances by walking them "on the hoof".Droving stock to market, usually on foot and often with the aid of dogs, has a very long history in the old world...

 cattle over long distances across rough terrain. In the 19th century, New South Wales
New South Wales
New South Wales is a state of :Australia, located in the east of the country. It is bordered by Queensland, Victoria and South Australia to the north, south and west respectively. To the east, the state is bordered by the Tasman Sea, which forms part of the Pacific Ocean. New South Wales...

 cattle farmer Thomas Hall crossed
Crossbreed
A crossbreed or crossbred usually refers to an animal with purebred parents of two different breeds, varieties, or populations. Crossbreeding refers to the process of breeding such an animal, often with the intention to create offspring that share the traits of both parent lineages, or producing...

 the dogs used by drovers in his parents' home county, Northumberland
Northumberland
Northumberland is the northernmost ceremonial county and a unitary district in North East England. For Eurostat purposes Northumberland is a NUTS 3 region and is one of three boroughs or unitary districts that comprise the "Northumberland and Tyne and Wear" NUTS 2 region...

, with dingoes he had tamed. The resulting dogs were known as Halls Heeler
Halls Heeler
The Halls Heeler was a dog bred by Thomas Simpson Hall to herd cattle on the Hall family's extensive properties in north-western New South Wales in the 19th century. On Dartbrook Station, in the Upper Hunter Valley, Hall selectively crossed the offspring of Northumberland Drover's Dogs that he had...

s. After Hall's death in 1870, the dogs became available beyond the Hall family and their associates, and were subsequently developed into two modern breeds, the Australian Cattle Dog and the Australian Stumpy Tail Cattle Dog
Australian Stumpy Tail Cattle Dog
The Australian Stumpy Tail Cattle Dog is a bobtailed, medium sized breed of dog. The Australian Stumpy Tail Cattle Dog was developed in Australia to herd cattle, and descends from crosses between European herding dogs and the Australian dingo.- Appearance :...

. Influential in the Cattle Dog's early development was Robert Kaleski
Robert Kaleski
Robert Kaleski was a self-taught writer, bushman, environmentalist and canine authority living in New South Wales at the turn of the nineteenth century...

 who wrote the first standard
Breed standard (dogs)
A breed standard in the dog fancy is a set of guidelines covering specific externally observable qualities such as appearance, movement, and temperament for that dog breed...

 for the breed.

The Australian Cattle Dog is a medium-sized, short-coated dog that occurs in two main colour forms. It has either brown or black hair distributed fairly evenly through a white coat, which gives the appearance of a "red" or "blue" dog. It has been nicknamed a "Red Heeler" or "Blue Heeler" on the basis of this colouring and its practice of moving reluctant cattle by nipping at their heels. Dogs from a line bred in Queensland
Queensland
Queensland is a state of Australia, occupying the north-eastern section of the mainland continent. It is bordered by the Northern Territory, South Australia and New South Wales to the west, south-west and south respectively. To the east, Queensland is bordered by the Coral Sea and Pacific Ocean...

, Australia, which were successful at shows and at stud
Stud (animal)
A stud animal is a registered animal retained for breeding. The terms for the male of a given animal species usually imply that the animal is entire—that is, not castrated—and therefore capable of siring offspring...

 in the 1940s were called "Queensland Heelers" to differentiate them from lines bred in New South Wales, and this nickname is now occasionally applied to any Australian Cattle Dog.

As with dogs from other working breeds
Working dog
A working dog refers to a canine working animal, i.e., a type of dog that is not merely a pet but learns and performs tasks to assist and/or entertain its human companions, or a breed of such origin...

, the Australian Cattle Dog has a high level of energy, a quick intelligence, and an independent streak. It responds well to structured training, particularly when the training is interesting and challenging. It is not aggressive, but forms a strong attachment with its owners and can be protective of them and their possessions, and it was bred to bite. It is easy to groom and maintain, requiring little more than a brushing during the shedding period. The most common health problems are deafness and progressive blindness (both hereditary
Heredity
Heredity is the passing of traits to offspring . This is the process by which an offspring cell or organism acquires or becomes predisposed to the characteristics of its parent cell or organism. Through heredity, variations exhibited by individuals can accumulate and cause some species to evolve...

 conditions) and accidental injury; otherwise, it is a robust breed with a lifespan of 12 to 14 years. Australian Cattle Dogs now participate in a range of activities beyond the herding they were bred to do, including competing with their owners in sporting events and working as assistance dogs.

Appearance

The Australian Cattle Dog is a sturdy, compact dog that gives the impression of agility and strength. It has a broad skull that flattens to a definite stop between the eyes, with muscular cheeks and a medium-length, deep, powerful muzzle
Snout
The snout, or muzzle, is the protruding portion of an animal's face, consisting of its nose, mouth, and jaw.-Terminology:The term "muzzle", used as a noun, can be ambiguous...

. The ears are pricked, small to medium in size and set wide apart, with a covering of hair on the inside. The eyes are oval and dark, with an alert, keen expression. The neck and shoulders are strong and muscular; the forelegs are straight and parallel; and the feet round and arched, with small, sturdy toes and nails.

The Cattle Dog breed standard states that it should have well-conditioned muscles, even when bred for companion or show
Conformation show
Conformation shows, also referred to as breed shows, are a kind of dog show in which a judge familiar with a specific dog breed evaluates individual purebred dogs for how well the dogs conform to the established breed type for their breed, as described in a breed's individual breed standard.A...

 purposes, and that its appearance should be symmetrical and balanced, with no individual part of the dog exaggerated. It should not look either delicate or cumbersome, as either characteristic limits the agility and endurance that is necessary for a working dog.

Size

The female Australian Cattle Dog measures approximately 43–48 cm (16.9–18.9 in) at the withers
Withers
The withers is the ridge between the shoulder blades of a four-legged animal. In many species it is the tallest point of the body, and in horses and dogs it is the standard place to measure the animal's height .-Horses:The withers in horses are formed by the dorsal spinal processes of roughly the...

, and the male measures about 46–51 cm (18.1–20.1 in) at the withers. The dog should be longer than tall, that is, the length of the body from breast bone to buttocks is greater than the height at the withers, in a ratio of 10 to 9. An Australian Cattle Dog in good condition weighs around 20–28 kg (44.1–61.7 lb).

Coat and colour

There are two accepted coat colours, red and blue, though chocolate and cream do occur. Blue dogs can be blue, blue mottled, or blue speckled with or without black, tan, or white markings. Red dogs are evenly speckled with solid red markings. Both red dogs and blue dogs are born white (except for any solid coloured body or face markings) and the red or black hairs grow in as they mature. The distinctive adult colouration is the result of black or red hairs closely interspersed through a predominantly white coat. This is not merle colouration (a speckled effect that has associated health issues), but rather the result of the ticking gene
Gene
A gene is a molecular unit of heredity of a living organism. It is a name given to some stretches of DNA and RNA that code for a type of protein or for an RNA chain that has a function in the organism. Living beings depend on genes, as they specify all proteins and functional RNA chains...

. A number of breeds show ticking, which is the presence of colour through white areas, though the overall effect depends on other genes that will modify the size, shape and density of the ticking.

In addition to the primary colouration, an Australian Cattle Dog displays some patches of solid or near-solid colour. In both red and blue dogs, the most common are masks over one or both eyes, a white tip to the tail, a solid spot at the base of the tail, and sometimes solid spots on the body, though these are not desirable in dogs bred for conformation show
Conformation show
Conformation shows, also referred to as breed shows, are a kind of dog show in which a judge familiar with a specific dog breed evaluates individual purebred dogs for how well the dogs conform to the established breed type for their breed, as described in a breed's individual breed standard.A...

s. Blue dogs can have tan midway up the legs and extending up the front to breast and throat, with tan on jaws, and tan eyebrows. Both colour forms can have a white 'star' on the forehead called the 'Bentley Mark' after a legendary dog owned by Tom Bentley. Common miscolours in the Australian Cattle Dog are black hairs in a red-coated dog, including the extreme of a black saddle on a red dog, and extensive tan on the face and body on a blue dog, called creeping tan. The Cattle Dog has a double coat—the short, straight outer guard hairs are protective in nature, keeping the elements from the dog's skin while the undercoat is short, fine and dense.

The mask consists of a black patch over one or both eyes (for the blue coat colour) or a red patch over one or both eyes (for the red coat colour). Depending on whether one or both eyes have a patch, these are called, respectively, 'single' (or 'half') mask and 'double' (or 'full') mask. Dogs without a mask are called 'plain-faced'. Any of these are correct according to the breed standard. In conformation shows, even markings are preferred over uneven markings.

Tail

The breed standards of the Australian, American and Canadian kennel clubs
Kennel club
A kennel club is an organization for canine affairs that concerns itself with the breeding, showing and promotion of more than one breed of dog...

 specify that the Australian Cattle Dog should have a natural, long, un-docked tail. There will often be a solid colour spot at the base of the tail and a white tip. The tail should be set moderately low, following the slope of the back. It should hang in a slight curve at rest, though an excited dog may carry its tail higher. The tail should feature a reasonable level of brush.

In the US, tails are sometimes docked on working stock. The tail is not docked in Australia, and serves a useful purpose in increasing agility and the ability to turn quickly. The Australian Cattle Dog is a breed distinct from the Australian Stumpy Tail Cattle Dog
Australian Stumpy Tail Cattle Dog
The Australian Stumpy Tail Cattle Dog is a bobtailed, medium sized breed of dog. The Australian Stumpy Tail Cattle Dog was developed in Australia to herd cattle, and descends from crosses between European herding dogs and the Australian dingo.- Appearance :...

, a square-bodied dog born with a naturally 'bobbed' tail. The Stumpy Tail resembles the Australian Cattle Dog, but has a taller, leaner conformation. It occasionally has a natural long thin tail, but most are born without tails.

Temperament

Like many working dogs, the Australian Cattle Dog has high energy levels and an active mind. The breed ranks 10th in Stanley Coren's
Stanley Coren
Stanley Coren is a psychology professor and neuropsychological researcher who has become best known to the general public for a series of books regarding the intelligence, mental abilities and history of dogs...

 The Intelligence of Dogs
The Intelligence of Dogs
The Intelligence of Dogs is a book on dog intelligence by Stanley Coren, a professor of psychology at the University of British Columbia in Vancouver. Published in 1994, the book explains Coren's theories about the differences in intelligence between different breeds of dogs...

, rated as one of the most intelligent dogs ranked by obedience command trainability. The Cattle Dog needs plenty of exercise, companionship and a job to do, so a non-working dog might participate in dog sports, learning tricks, or other activities that engage its body and mind.

When on home ground, the Australian Cattle Dog is a happy, affectionate, and playful pet. However, it is reserved with people it does not know and naturally cautious in new situations. Its attitude to strangers makes it an excellent guard dog
Guard dog
A guard dog, an attack dog or watch dog is a dog used to guard against, and watch for, unwanted or unexpected people or animals. The dog is discriminating so that it does not annoy or attack familiar people.-Barking:...

 when trained for this task, however it can be socialised to become accustomed to a variety of people from an early age as a family pet. It is good with older, considerate children, but will herd people by nipping at their heels, particularly younger children who run and squeal. By the time puppies are weaned, they should have learned that the company of people is pleasurable, and that responding to cues from a person is rewarding. The bond that this breed can create with its owner is strong and will leave the dog feeling protective towards the owner, typically resulting in the dog's never being too far from the owner's side. Aggression in an Australian Cattle Dog is more likely to be directed at strangers than owners or other dogs, though it will bite if treated harshly.

While an Australian Cattle Dog generally works silently, it will bark in alarm or to attract attention. It has a distinctive intense, high-pitched bark. Barking can be a sign of boredom or frustration; however, research has shown that pet dogs increase their vocalisation when raised in a noisy environment. It responds well to familiar dogs. However, when multiple dogs are present, establishing a pecking order
Pecking order
Pecking order or just peck order is the colloquial term for a hierarchical system of social organization in chickens. It was first described from the behaviour of poultry by Thorleif Schjelderup-Ebbe in 1921 under the German terms Hackordnung or Hackliste' ...

 can trigger aggression. It is not a breed that lives in a pack with other dogs.

Grooming

Known as a 'wash and wear' dog, the Australian Cattle Dog requires little grooming, and an occasional brushing is all that is required to keep the coat clean and odour-free. Even for the show ring it needs no more than wiping down with a moist cloth. It is not a year-round shedder but blows its coat once a year (twice in the case of intact females
Entire (animal)
In animal fancy and animal husbandry, entire indicates an animal has not been desexed, i.e., spayed or neutered ....

) and frequent brushing and a warm bath during this period will contain the shedding hair. As with all dogs, regular attention to nails, ears and teeth will help avoid health problems.

Training

In Katherine Buetow’s guide to the Australian Cattle Dog, Ian Dunbar
Ian Dunbar
Dr. Ian Dunbar is a veterinarian, dog trainer, and writer.Dr. Dunbar has helped popularize lure-reward based dog training. He founded his training school, Sirius Dog Training, based on that philosophy.-Biography:...

 makes the point that while people think of dog training
Dog training
Dog training is the process of teaching skills or behaviors to a dog. This can include teaching a dog to respond to certain commands, or helping the dog learn coping skills for stressful environments. Dog training often includes operant conditioning, classical conditioning, or non-associative...

 as teaching a dog to sit, speak and roll-over, the dog already knows how to do these things. Training, he says, involves teaching the dog that it is a good idea to do these things when a particular word is said or signal is given. He goes on to explain his belief that training is about opening communication channels, so that the dog knows what the handler wants it to do, and knows that it will be worth its while to do it. Consequences for the dog can be rewards for doing what is required, as recommended by Dunbar, or corrections where an unwanted behaviour is performed. Like other working breeds
Working dog
A working dog refers to a canine working animal, i.e., a type of dog that is not merely a pet but learns and performs tasks to assist and/or entertain its human companions, or a breed of such origin...

, the Australian Cattle Dog is intelligent and responsive; both of these traits can be an advantage in training where a structured, varied program is used, but can lead to unwanted outcomes if training is not consistent, or is repetitive and boring for the dog. Stock dog trainer Scott Lithgow recommends making training a game so the Cattle Dog learns that obedience leads to enjoyment. Many of a Cattle Dog's natural behaviours are undesirable in a pet: barking, chewing, chasing, digging, defending territory, and nipping heels. Training, therefore, involves helping the dog adopt a lifestyle that is probably very different from that of its droving ancestors. The Australian Cattle Dog is biddable, and responds well to training.

Activities

The Australian Cattle Dog demands a high level of physical activity. Like many other herding dog
Herding dog
A herding dog, also known as a stock dog or working dog, is a type of pastoral dog that either has been trained in herding or belongs to breeds developed for herding...

 breeds, the Cattle Dog has an active and fertile mind and if it is not given jobs to do it will find its own activities – which might not please the owner. It will appreciate a walk around the neighbourhood, but it needs structured activities that engage and challenge it, and regular interaction with its owner. While individual dogs have their own personalities and abilities, as a breed the Australian Cattle Dog is suited to any activity that calls for athleticism, intelligence, and endurance.

Kennel club
Kennel club
A kennel club is an organization for canine affairs that concerns itself with the breeding, showing and promotion of more than one breed of dog...

-sponsored herding
Herding
Herding is the act of bringing individual animals together into a group , maintaining the group and moving the group from place to place—or any combination of those. While the layperson uses the term "herding", most individuals involved in the process term it mustering, "working stock" or...

 trials with a range of events suit the driving abilities of the Cattle Dog and other upright breeds, while sheepdog trials are more suited to the ‘eye’ breeds such as the Border Collie
Border Collie
The Border Collie is a herding dog breed developed in the Anglo-Scottish border region for herding livestock, especially sheep. It is the most widespread of the collie breeds....

 and Australian Kelpie
Australian Kelpie
The Kelpie is an Australian sheep dog successful at mustering and droving with little or no command guidance. They are medium-sized dogs and come in a variety of colours...

. Herding instincts and trainability are measured at non-competitive herding tests, and basic commands are sometimes taught through herding games, where rules such as 'stay', 'get it' and 'that'll do' are applied to fetching a ball or chasing a yard broom.

The Australian Cattle Dog was developed for its ability to encourage reluctant cattle to travel long distances, and may be the best breed in the world for this work. However, some working dog trainers have expressed concern that dogs bred for the show ring are increasingly too short in the legs and too stocky in the body to undertake the work for which they were originally bred.
Among the most popular activities for an Australian Cattle Dog is dog agility
Dog agility
Dog agility is a dog sport in which a handler directs a dog through an obstacle course in a race for both time and accuracy. Dogs run off-leash with no food or toys as incentives, and the handler can touch neither dog nor obstacles...

. It is ideally suited for navigating obstacle courses, since as a herding dog it is reactive to the handler's body language and willing to work accurately at a distance from the handler. Agility has been used by Cattle Dog owners to instil confidence in their dogs, and enhance their performance in training and competition.

The Australian Cattle Dog thrives on change and new experiences, and many handlers find training the breed challenging for this reason. An Australian Cattle Dog can excel in obedience competition
Obedience trial
An obedience trial is a dog sport in which a dog must perfectly execute a predefined set of tasks when directed to do so by his handler. According the American Kennel Club obedience regulations...

. It will enjoy the challenges, such as retrieving a scented article, but the breed's problem-solving ability may lead it to find solutions to problems that are not necessarily rewarded by the obedience judges. Rally obedience
Rally obedience
Rally obedience is a dog sport based on obedience. It was originally devised by Charles L. "Bud" Kramer from the obedience practice of "doodling" - doing a variety of interesting warmup and freestyle exercises....

 offers more interaction with the owner and less repetition than traditional obedience trials.

Australian Cattle Dogs have been successful in a range of dog sports including weight pulling
Weight pulling
Weight pulling is a dog sport involving a dog pulling a cart or sled loaded with weight a short distance across dirt/gravel, grass, carpet, or snow. It is a modern adaptation of freighting, in which dogs were used as freight animals to move cargo. Many breeds participate in this sport, with dogs...

, flyball
Flyball
Flyball is a dog sport in which teams of dogs race against each other from a start/finish line, over a line of hurdles, to a box that releases a tennis ball to be caught when the dog presses the spring-loaded pad, then back to their handlers while carrying the ball.Flyball is run in teams of four...

 and schutzhund
Schutzhund
Schutzhund is a dog sport that was developed in Germany in the early 1900s as a breed suitability test for the German Shepherd Dog. The test would determine if the dog displayed the appropriate traits and characteristics of a proper working German Shepherd Dog...

. The breed is particularly suited to activities that a dog can share with its owner such as canicross
Canicross
Cani-cross is the sport of cross-country running while hitched to a dog. It is popular in Europe. It is related to the winter dog-powered sport of skijoring and bikejoring, wherein a skier or cyclist is hitched to one to three dogs....

, disc dog
Disc dog
Disc dog is the more generic name for what is commonly called Frisbee dog. In disc dog competitions, dogs and their human flying disc throwers compete in events such as distance catching and somewhat choreographed freestyle catching. The sport celebrates the bond between handler and dog, by...

, and skijoring
Skijoring
Skijoring is a winter sport where a person on skis is pulled by a horse, a dog or a motor vehicle. It is derived from the Norwegian word skikjøring meaning ski driving.- Dog skijoring :...

 or bikejoring
Bikejoring
Bikejoring, is a dog mushing activity related to skijoring, canicross, and dog scootering. It is a recreation or sport where a harnessed dog or team of dogs attached to a towline, pull and run ahead of a cyclist. Bikejoring is a non snow season activity...

. It is an effective hiking
Hiking
Hiking is an outdoor activity which consists of walking in natural environments, often in mountainous or other scenic terrain. People often hike on hiking trails. It is such a popular activity that there are numerous hiking organizations worldwide. The health benefits of different types of hiking...

 companion because of its natural endurance, its general lack of interest in hunting, and preference for staying by its owner's side. Most Australian Cattle Dogs love the water and are excellent swimmers. It is not a hyperactive breed, and once one has had its exercise, it is happy to lie at its owner's feet, or to rest in its bed or crate while keeping an ear and eye open for signs of pending activity. The Australian Cattle Dog is an adaptable dog that can accept city or indoor living conditions, if its considerable exercise and companionship needs are met.

The Australian Cattle Dog can be put to work in a number of ways. Cattle Dogs are service dogs for people with a disability or are therapy dog
Therapy dog
A therapy dog is a dog trained to provide affection and comfort to people in hospitals, retirement homes, nursing homes, schools, people with learning difficulties, and stressful situations, such as disaster areas....

s, some work for customs agencies in drug detection
Detection dog
A detection dog or sniffer dog is a dog that is trained to and works at using its senses to detect substances such as explosives, illegal drugs, or blood. Hunting dogs that search for game and search dogs that search for missing humans are generally not considered detection dogs...

, some as police dog
Police dog
A police dog, often referred to as a "K-9 dog" in some areas , is a dog that is trained specifically to assist police and other law-enforcement personnel in their work...

s, and others herd pest animals, such as geese
Canada Goose
The Canada Goose is a wild goose belonging to the genus Branta, which is native to arctic and temperate regions of North America, having a black head and neck, white patches on the face, and a brownish-gray body....

, for city or state agencies.

Health and lifespan

Lifespan

In a small sample of 11 deceased dogs, Australian Cattle Dogs had a median longevity of 11.7 years (maximum 15.9 yrs). A larger survey of 100 deceased dogs yielded a mean longevity of 13.41 years with a standard deviation
Standard deviation
Standard deviation is a widely used measure of variability or diversity used in statistics and probability theory. It shows how much variation or "dispersion" there is from the average...

 of 2.36 years. The median longevities of breeds of similar size are between 11 and 13 years. There is an anecdotal report of a Cattle Dog named Bluey
Bluey (Australian cattle dog)
Bluey was an Australian cattle dog owned by Les and Esma Hall of Rochester, Victoria, Australia, which, according to an anecdotal report, lived 29 years, 6 months and 12 days, but the record is unverified...

, born in 1910 and living for 29.5 years, but the record is unverified. Even if true, Bluey's record age would have to be regarded more as an uncharacteristic exception than as an indicator of common exceptional longevity for the entire breed. It remains, however, that Australian Cattle Dogs generally age well and appear to live on average almost a year longer than most dogs of other breeds in the same weight class. Many members of the breed are still well and active at 12 or 14 years of age, and some maintain their sight, hearing and even their teeth until their final days.

Common health problems

The Australian Cattle Dog carries recessive piebald
Piebald
A piebald or pied animal is one that has a spotting pattern of large unpigmented, usually white, areas of hair, feathers, or scales and normally pigmented patches, generally black. The colour of the animal's skin underneath its coat is also pigmented under the dark patches and unpigmented under...

 allele
Allele
An allele is one of two or more forms of a gene or a genetic locus . "Allel" is an abbreviation of allelomorph. Sometimes, different alleles can result in different observable phenotypic traits, such as different pigmentation...

s that produce white in the coat and skin and are linked to congenital
Congenital disorder
A congenital disorder, or congenital disease, is a condition existing at birth and often before birth, or that develops during the first month of life , regardless of causation...

 hereditary
Heredity
Heredity is the passing of traits to offspring . This is the process by which an offspring cell or organism acquires or becomes predisposed to the characteristics of its parent cell or organism. Through heredity, variations exhibited by individuals can accumulate and cause some species to evolve...

 deafness, though it is possible that there is a multi-gene cause for deafness in a dog with the piebald pigment genes. Around 2.4% of Cattle Dogs in one study were found to be deaf in both ears and 14.5% were deaf in at least one ear.

The Australian Cattle Dog is one of the dog breeds affected by progressive retinal atrophy
Progressive retinal atrophy
Progressive retinal atrophy is a group of genetic diseases seen in certain breeds of dogs and, more rarely, cats. Similar to retinitis pigmentosa in humans, it is characterized by the bilateral degeneration of the retina, causing progressive vision loss culminating in blindness...

. It has the most common form, Progressive Rod/Cone Degeneration (PRCD), a condition that causes the rods
Rod cell
Rod cells, or rods, are photoreceptor cells in the retina of the eye that can function in less intense light than can the other type of visual photoreceptor, cone cells. Named for their cylindrical shape, rods are concentrated at the outer edges of the retina and are used in peripheral vision. On...

 and cones
Cone cell
Cone cells, or cones, are photoreceptor cells in the retina of the eye that are responsible for color vision; they function best in relatively bright light, as opposed to rod cells that work better in dim light. If the retina is exposed to an intense visual stimulus, a negative afterimage will be...

 in the retina
Retina
The vertebrate retina is a light-sensitive tissue lining the inner surface of the eye. The optics of the eye create an image of the visual world on the retina, which serves much the same function as the film in a camera. Light striking the retina initiates a cascade of chemical and electrical...

 of the eye to deteriorate later in life, resulting in blindness. PRCD is an autosomal recessive trait
Autosome
An autosome is a chromosome that is not a sex chromosome, or allosome; that is to say, there is an equal number of copies of the chromosome in males and females. For example, in humans, there are 22 pairs of autosomes. In addition to autosomes, there are sex chromosomes, to be specific: X and Y...

 and a dog can be a carrier of the affected gene without developing the condition.

Hip dysplasia is not common in the breed, although it occurs sufficiently often for many breeders to have their breeding stock
Selective breeding
Selective breeding is the process of breeding plants and animals for particular genetic traits. Typically, strains that are selectively bred are domesticated, and the breeding is sometimes done by a professional breeder. Bred animals are known as breeds, while bred plants are known as varieties,...

 tested. The Cattle Dog has a number of inherited conditions, but most of these are not common. Hereditary polioencephalomyelopathy of the Australian Cattle Dog is a very rare condition caused by an inherited biochemical defect. Dogs identified with the condition were completely paralysed within their first year. Based on a sample of 69 still-living dogs, the most common health issues noted by owners were musculoskeletal (spondylosis
Spondylosis
Spondylosis is a term referring to degenerative osteoarthritis of the joints between the centra of the spinal vertebrae and/or neural foraminae. If this condition occurs in the zygapophysial joints, it can be considered facet syndrome...

, elbow dysplasia
Elbow dysplasia
Elbow dysplasia is a condition involving multiple developmental abnormalities of the elbow-joint in the dog, specifically the growth of cartilage or the structures surrounding it. These abnormalities, known as 'primary lesions', give rise to osteoarthritic processes...

, and arthritis) and reproductive (pyometra
Pyometra
Pyometra is a disease of the uterus most commonly seen in female dogs, but also seen in female cats , rabbits, ferrets, rats and guinea pigs. Pyometra is an important disease to be aware of for any dog owner because of the sudden nature of the disease and the deadly consequences if left untreated...

, infertility, and false pregnancy
False pregnancy
False pregnancy or hysterical pregnancy, most commonly termed pseudocyesis in humans and pseudopregnancy in other mammals, is the appearance of clinical and/or subclinical signs and symptoms associated with pregnancy when the person or animal is not pregnant. Clinically, false pregnancy is most...

), and blindness. A study of dogs diagnosed at Veterinary Colleges in the US and Canada over a thirty-year period described fractures, lameness and cruciate ligament tears
Anterior cruciate ligament injury
An injury to the anterior cruciate ligament can be a debilitating musculoskeletal injury to the knee, seen most often in athletes. Non-contact tears and ruptures are the most common causes of ACL injury....

 as the most common conditions in the Australian Cattle Dogs treated.

In Australia

George Hall and his family arrived in the New South Wales
New South Wales
New South Wales is a state of :Australia, located in the east of the country. It is bordered by Queensland, Victoria and South Australia to the north, south and west respectively. To the east, the state is bordered by the Tasman Sea, which forms part of the Pacific Ocean. New South Wales...

 Colony in 1802. By 1825, the Halls had established two cattle stations in the Upper Hunter Valley, and had begun a northward expansion into the Liverpool Plains
Liverpool Plains
The Liverpool Plains is a geographical area and Local Government Area in the North West Slopes, New South Wales.The Shire was formed on 17 March 2004 by the amalgamation of Quirindi Shire with parts of three other shires: Parry, Murrurundi and Gunnedah.- Main towns :* Quirindi* Ardglen*...

, New England
New England (Australia)
New England or New England North West is the name given to a generally undefined region about 60 kilometres inland, that includes the Northern Tablelands and the North West Slopes regions in the north of the state of New South Wales, Australia.-History:The region has been occupied by Indigenous...

 and Queensland
Queensland
Queensland is a state of Australia, occupying the north-eastern section of the mainland continent. It is bordered by the Northern Territory, South Australia and New South Wales to the west, south-west and south respectively. To the east, Queensland is bordered by the Coral Sea and Pacific Ocean...

. Getting his cattle to the Sydney markets presented a problem in that thousands of head of cattle had to be moved for thousands of kilometres along unfenced stock route
Stock route
In Australia, the Travelling Stock Route is an authorised thoroughfare for the walking of domestic livestock such as sheep or cattle from one location to another...

s through sometimes rugged bush and mountain ranges. A note, in his own writing, records Thomas Hall's anger at losing 200 head in scrub
Shrubland
Shrubland, scrubland, scrub or brush is a plant community characterized by vegetation dominated by shrubs, often also including grasses, herbs, and geophytes. Shrubland may either occur naturally or be the result of human activity...

.

A droving
Droving
Droving is the practice of moving livestock over large distances by walking them "on the hoof".Droving stock to market, usually on foot and often with the aid of dogs, has a very long history in the old world...

 dog was needed, but the colonial working dogs are understood to have been of the Old English Sheepdog
Old English Sheepdog
The Old English Sheepdog is a large breed of dog which was developed in England from early herding types of dog. The Old English Sheepdog has very long fur covering the face and eyes...

 type, commonly referred to as Smithfields. Descendants of these dogs still exist, but are useful only over short distances and for yard work with domesticated cattle. Thomas Hall addressed the problem by importing several of the dogs used by drovers in Northumberland
Northumberland
Northumberland is the northernmost ceremonial county and a unitary district in North East England. For Eurostat purposes Northumberland is a NUTS 3 region and is one of three boroughs or unitary districts that comprise the "Northumberland and Tyne and Wear" NUTS 2 region...

, his parents’ home county. At this time dogs were generally described by their job, regardless of whether they constituted a ‘breed’ as it is currently understood. In the manner of the time, the Hall family historian, A. J. Howard, gave these blue mottled dogs a name: Northumberland Blue Merle Drovers Dog.

Thomas Hall crossed his Drovers Dogs with dingo
Dingo
The Australian Dingo or Warrigal is a free-roaming wild dog unique to the continent of Australia, mainly found in the outback. Its original ancestors are thought to have arrived with humans from southeast Asia thousands of years ago, when dogs were still relatively undomesticated and closer to...

es he had tamed and by 1840 was satisfied with his resulting progeny. During the next thirty years, the Halls Heeler
Halls Heeler
The Halls Heeler was a dog bred by Thomas Simpson Hall to herd cattle on the Hall family's extensive properties in north-western New South Wales in the 19th century. On Dartbrook Station, in the Upper Hunter Valley, Hall selectively crossed the offspring of Northumberland Drover's Dogs that he had...

s, as they became known, were used only by the Halls. Given that they were dependent on the dogs, which gave them an advantage over other cattle breeders, it is understandable that the dogs were not distributed beyond the Hall's properties. It was not until after Thomas Hall's death in 1870, when the properties went to auction with the stock on them, that Halls Heelers became freely available.
By the 1890s, the dogs had attracted the attention of the Cattle Dog Club of Sydney, a group of men with a recreational interest in the new practice of showing dogs competitively. None were stockmen working cattle on a daily basis, and initially they were interested in a range of working dogs, including the Smithfield. They reportedly adopted the term 'Australian Cattle Dog' to refer to the dogs being bred from bloodlines originating from Thomas Hall's 'heelers', and prominent members of the group concentrated on breeding these lines. Of these breeders, the Bagust family was the most influential. Robert Kaleski
Robert Kaleski
Robert Kaleski was a self-taught writer, bushman, environmentalist and canine authority living in New South Wales at the turn of the nineteenth century...

, of Moorebank
Moorebank, New South Wales
Moorebank is a suburb of Sydney, in the state of New South Wales, Australia. Moorebank is located 27 kilometres south-west of the Sydney central business district in the local government area of the City of Liverpool....

, a young associate of Harry Bagust, wrote “in 1893 when I got rid of my cross-bred cattle dogs and took up the blues, breeders of the latter had started breeding ... to fix the type. I drew up a standard for them on those lines”. This first breed standard
Breed standard
A breed standard in animal fancy and animal husbandry is a set of guidelines which is used to ensure that the animals produced by a breeder or breeding facility conform to the specifics of the breed....

 for the Cattle Dog breed was published, with photographs, by the New South Wales Department of Agriculture in 1903.

Kaleski's standard was adopted by breed clubs in Queensland and New South Wales and re-issued as their own, with local changes. His writings from the 1910s give an important insight into the early history of the breed. However, dog breeder and author Noreen Clark has noted that his opinions are sometimes just that, and he introduces some contradictory assertions in his later writings, as well as some assumptions that are illogical in the light of modern science. Some of these have persisted; for example he saw the red colour form as having more dingo in it than the blue form, and there is a persistent belief that reds are more vicious than blues. The most enduring of Kaleski's myths relate to Dalmatian
Dalmatian (dog)
The Dalmatian is a breed of dog whose roots are often said to trace back to Dalmatia, a region of Croatia where the first illustrations of the dog have been found. The Dalmatian is noted for its unique black- or brown-spotted coat and was mainly used as a carriage dog in its early days...

 and Kelpie infusions into the early Cattle Dog breed. These infusions are not referred to in Kaleski's writings until the 1920s and it seems likely that Kaleski sought to explain the Cattle Dog's mottled colouration and tan on legs by similarity to the Dalmatian and Kelpie, respectively. The genetics of coat colour, and the current understanding of hereditary characteristics, make the infusion of Dalmatian to increase the cattle dog's tolerance of horses an extremely unlikely event. There were relatively few motor vehicles in Australia at the beginning of the 20th century, so most dogs of any breed would have been accustomed to horses. The Kelpie breed was developed after the Cattle Dog type was described, so its infusion is unlikely. It is possible that there was some infusion of Bull Terrier
Bull Terrier
The Bull Terrier or English Bull Terrier is a breed of dog in the terrier family. They are known for their large, egg-shaped head, small triangular eyes, and "jaunty gait." Their temperament has been described as generally fun-loving, active and clownish...

 but there is no verifiable record of this, and the Cattle Dog has not had the Bull Terrier's instinct to bite and hold, which would have been an undesirable trait. Early in the 1900s there was considerable in-fighting amongst members of the Cattle Dog Club, and a series of arguments about the origin of the breed appeared in newspapers and journals of the time. While many of these arguments were misleading, some irrational, and the majority not supported by historical facts, they continue to be circulated, resulting in a number of theories on the origins of the breed. In recent years, information technology
Information technology
Information technology is the acquisition, processing, storage and dissemination of vocal, pictorial, textual and numerical information by a microelectronics-based combination of computing and telecommunications...

 enabling the manipulation of large databases combined with advances in the understanding of canine genetics
Genetics
Genetics , a discipline of biology, is the science of genes, heredity, and variation in living organisms....

 has allowed a clearer understanding of the development of the breed.

Through the 1890s, Cattle Dogs of Halls Heeler derivations were seen in the kennels of exhibiting Queensland dog breeders such as William Byrne of Booval
Booval, Queensland
Booval is a suburb of Ipswich, Queensland, Australia, containing both residential and commercial areas.Booval straddles Brisbane Rd, the main arterial link to the Ipswich Motorway. The Booval Fair shopping centre, located on Brisbane Rd, contains a number of major chain stores, including Woolworths...

, and these were a different population from those shown in New South Wales. When Royal Shows
Agricultural show
An agricultural show is a public event showcasing the equipment, animals, sports and recreation associated with agriculture and animal husbandry. The largest comprise a livestock show , a trade fair, competitions, and entertainment...

 resumed after World War II, Sydney exhibitors saw Little Logic offspring for the first time and these dogs and their sires' show record created a demand in New South Wales for Little Logic's lineage. By the end of the 1950s, there were few Australian Cattle Dogs whelped that were not descendants of Little Logic and his best known son, Logic Return. The success and popularity of these dogs led to the growth of the nickname 'Queensland Heeler'.

The prominence of Little Logic and Logic Return in the pedigrees of modern Australian Cattle Dogs was perpetuated by Wooleston Kennels. For some twenty years, Wooleston supplied foundation and supplementary breeding stock to breeders in Australia, North America and Continental Europe. As a result, Wooleston Blue Jack is ancestral to most, if not all, Australian Cattle Dogs whelped since 1990 in any country.

In the US

In the 1940s Alan McNiven, a Sydney veterinarian, introduced Dingo, Kelpie, German Shepherd, and Kangaroo Hound into his breeding program; however, the Royal Agricultural Society Kennel Club (RASKC) would not register the cross breeds as Australian Cattle Dogs, even though McNiven argued they were true to conformation, colour and temperament. McNiven responded by giving his pups registration papers from dead dogs, and was consequently expelled from the RASKC and all of his dogs removed from the registry. Meanwhile, Greg Lougher, a Napa, California
Napa, California
-History:The name Napa was probably derived from the name given to a southern Nappan village whose people shared the area with elk, deer, grizzlies and cougars for many centuries, according to Napa historian Kami Santiago. At the time of the first recorded exploration into Napa Valley in 1823, the...

 cattle rancher who met Alan McNiven while stationed in Australia during World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

, had imported several adults and several litters from McNiven. After his de-registration McNiven continued to export his ‘improved’ dogs to the US. Many US soldiers who were stationed in Queensland or NSW during the War discovered the Australian Cattle Dog and took one home when they returned.

In the late 1950s a veterinarian in Santa Rosa, California
Santa Rosa, California
Santa Rosa is the county seat of Sonoma County, California, United States. The 2010 census reported a population of 167,815. Santa Rosa is the largest city in California's Wine Country and fifth largest city in the San Francisco Bay Area, after San Jose, San Francisco, Oakland, and Fremont and 26th...

, Jack Woolsey, was introduced to Lougher’s dogs. With his partners, he bought several dogs and started breeding them. The breeders advertised the dogs in Western Horsemen stating they were guaranteed to work and calling them Queensland Heelers. Woolsey imported several purebred Australian Cattle Dogs to add to his breeding program, including Oaklea Blue Ace, Glen Iris Boomerang and several Glen Iris bitches. The National Stock Dog Registry of Butler, Indiana
Butler, Indiana
Butler is a city in DeKalb County, Indiana, United States. The population was 2,684 at the 2010 census.-Geography:Butler is located at .According to the United States Census Bureau, the city has a total area of , all of it land.-Demographics:...

, registered the breed, assigning American numbers without reference to Australian registrations.

Australian Cattle Dogs had been classified in the "miscellaneous" category at the American Kennel Club (AKC) since the 1930s; to get the breed full recognition, the AKC required that a National Breed Parent Club be organised for promotion and protection of the breed. In 1967 Esther Ekman met Chris Smith-Risk at an AKC show, and the two fell into conversation about their Australian Cattle Dogs and the process of establishing a parent club for the breed. By 1969 the fledgling club had 12 members and formally applied to the AKC for instructions. One of the requirements was that the Club had to start keeping its own registry for the breed and that all dogs on the registry would have to be an extension of the Australian registry, tracing back to registered dogs in Australia. The AKC Parent Club members began researching their dogs, including exchanging correspondence with McNiven, and discovered that few of them had dogs that could be traced back to dogs registered in Australia. The AKC took over the club registry in 1979 and the breed was fully recognised in September 1980. The Australian Cattle Dog Club of America is still active in the promotion of the breed and the maintenance of breed standards. The National Stock Dog Registry continued to recognise Cattle Dogs without prerequisite links to Australian registered dogs, on the condition that any dog of unknown parentage that was presented for registry would be registered as an 'American Cattle Dog', and all others would still be registered as 'Australian Cattle Dogs'.

In Canada

The breed gained official recognition from the Canadian Kennel Club
Canadian Kennel Club
The Canadian Kennel Club is the primary registry body for purebred dog pedigrees in Canada. Beyond maintaining the pedigree registry, the C.K.C...

 in January 1980 after five years of collecting pedigrees, gathering support, and lobbying officials by two breeders and enthusiasts. The small number of Australian Cattle Dogs in Canada at the time were primarily working dogs on farms and ranches scattered across large distances. However, the fledgling breed club held conformation shows, obedience and agility competitions, and entered their dogs in sports including flyball and lure coursing
Lure coursing
Lure coursing is a sport for dogs that involves chasing a mechanically operated lure. Competition is usually limited to dogs of purebred sighthound breeds.-Lure course:...

. At the end of 1980, Landmaster Carina was named the first Australian Cattle Dog in Canada to gain both her conformation and obedience titles.

In the UK

The first registered Australian Cattle Dogs to arrive in the United Kingdom were two blue puppies, Lenthal Flinton and Lenthal Darlot, followed in 1980 by Landmaster Darling Red in whelp. Landmaster Darling Red was imported by John and Mary Holmes, and proved to be an outstanding brood bitch. Over the next few years additional Cattle Dogs arrived in the UK from Holland, Kenya, Germany and Australia, although prior to relaxation of rules regarding artificial insemination
Artificial insemination
Artificial insemination, or AI, is the process by which sperm is placed into the reproductive tract of a female for the purpose of impregnating the female by using means other than sexual intercourse or natural insemination...

, the UK gene pool
Gene pool
In population genetics, a gene pool is the complete set of unique alleles in a species or population.- Description :A large gene pool indicates extensive genetic diversity, which is associated with robust populations that can survive bouts of intense selection...

 was limited. In 1985 an Australian Cattle Dog Society was formed and officially recognised by the Kennel Club; before this they had to compete in the category "Any Variety Not Separately Classified". Australian Cattle Dogs were competing successfully in obedience and working trials in the UK during the 1980s.

Cross breeds

The Texas Heeler
Texas Heeler
The Texas Heeler is a non pure bred dog found mainly in Texas. They are a cross or mix between the Australian Cattle Dog, and the Australian Shepherd, but can be a cross between the ACD and the Border Collie. They are bred mainly for their ability to work cattle...

 is a cross between the Australian Cattle Dog and the Australian Shepherd
Australian Shepherd
The Australian shepherd is a breed of herding dog that was developed on ranches in the Western United States. Despite its name, the breed, commonly known as an Aussie, did not originate in Australia They acquired their name because some of the Australian sheepdogs arrived in the United States with...

 that was first registered with the Animal Research Foundation (ARF)
Animal Research Foundation (ARF)
The Animal Research Foundation is America's oldest all breed registry and was established in 1947. The ARF Gives recognition and registration of working stockdogs, rare breeds, standard breeds and designer breeds....

 in 1970. The ARF has registered Australian Cattle Dogs without papers
Breed registry
A breed registry, also known as a stud book or register, in animal husbandry and the hobby of animal fancy, is an official list of animals within a specific breed whose parents are known. Animals are usually registered by their breeders when they are still young...

 as 'Australian Cattledog Queensland Heelers' since 1965 and was the first organisation to recognise the Australian Shepherd
Australian Shepherd
The Australian shepherd is a breed of herding dog that was developed on ranches in the Western United States. Despite its name, the breed, commonly known as an Aussie, did not originate in Australia They acquired their name because some of the Australian sheepdogs arrived in the United States with...

. Although originally bred for its ability to work cattle, the Texas Heeler is increasingly used as a pet and a companion in dog sports. As with most cross breeds, the Texas Heeler's size and appearance is a variable combination of the parent breeds.
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