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Coyote
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The coyote (Canis latrans), also known as the prairie wolf, is a species of canid found throughout North and Central America, ranging from Panama in the south, north through Mexico, the United States, and Canada. It occurs as far north as Alaska and all but the northernmost portions of Canada.
There are currently 19 recognized subspecies, with 16 in Canada, Mexico and the United States, and 3 in Central America. Unlike its cousin the Gray Wolf, which is Eurasian in origin, the coyote evolved in North America 2 MYA alongside the Dire Wolf.
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Encyclopedia
The coyote (Canis latrans), also known as the prairie wolf, is a species of canid found throughout North and Central America, ranging from Panama in the south, north through Mexico, the United States, and Canada. It occurs as far north as Alaska and all but the northernmost portions of Canada.
There are currently 19 recognized subspecies, with 16 in Canada, Mexico and the United States, and 3 in Central America. Unlike its cousin the Gray Wolf, which is Eurasian in origin, the coyote evolved in North America 2 MYA alongside the Dire Wolf. Unlike the wolf, the coyote's range has expanded in the wake of human civilization, and coyotes readily reproduce in metropolitan areas. It is thought by certain experts that the coyote's North American origin may account for its greater adaptability than the wolf, due to North America's greater prehistoric predation pressures.
Name
The name "coyote" is borrowed from Mexican Spanish, ultimately derived from the Nahuatl word cóyotl. Its scientific name, Canis latrans, means "barking dog."
Description
The color of the coyote's pelt varies from grayish brown to yellowish gray on the upper parts, while the throat and belly tend to have a buff or white color. The forelegs, sides of the head, muzzle and feet are reddish brown. The back has tawn-colored underfur and long, black-tipped guard hairs that form a black dorsal stripe and a dark cross on the shoulder area. The black-tipped tail has a scent gland located on its dorsal base. Coyotes shed once a year, beginning in May with light hair loss, ending in July after heavy shedding. The ears are proportionately large in relation to the head, while the feet are relatively small in relation to the rest of the body. Mountain dwelling coyotes tend to be dark furred while desert coyotes tend to be more yellowish in color.
Coyotes typically grow up to 75–87 centimeters (30–34 inches) in length and on average, weigh from 7–21 kilograms (15–46 pounds). Northern coyotes are typically larger than southern subspecies, with the largest coyotes on record weighing 74¾ pounds (33.7 kg) and measuring over five feet in total length. The coyote's dental formula is I 3/3, C 1/1, Pm 4/4, M usually 2/2, occasionally 3/3, 3/2, or 2/3 X 2 = 40, 42, or 44. Normal spacing between the upper canine teeth is 1? to 1? inches (29 to 35 mm) and 1 to 1¼ inches (25 to 32 mm) between the lower canine teeth. Certain experts have noted that the shape of a domestic dog's brain case is closer to the coyote's in shape than the wolf's.
The upper frequency limit of hearing for coyotes is 80 kHz, compared to the 60 kHz of domestic dogs. Compared to wolves, and similarly to domestic dogs, coyotes have a higher density of sweat glands on their paw pads. This trait is however absent in the large New England coyotes which are thought to have some wolf ancestry.
During pursuit, a coyote may reach speeds up to 43 mph (69 km/h), and can jump a distance of over 4 meters (13? feet).
Behavior
Though coyotes have been observed to travel in large groups, they primarily hunt in pairs. Typical packs consist of six closely related adults, yearlings and young. Coyote packs are generally smaller than wolf packs and associations between individuals are less stable. It has been theorized that this is due to an earlier expression of aggression, and the fact that coyotes reach their full growth in their first year, unlike wolves who reach it in their second. Common names of coyote groups are a band, a pack, or a rout.
Coyotes are primarily nocturnal but can occasionally be seen during daylight hours. Coyotes were once essentially diurnal, but have adapted to more nocturnal behavior with pressure from humans (McClennen et al, 2001).
Coyotes are capable of digging their own burrows, though they often appropriate the burrows of Groundhogs or American badgers. Coyote territorial ranges can be as much as 19 kilometers in diameter around the den and travel occurs along fixed trails.
In areas where wolves have been exterminated, coyotes usually flourish. For example, as New England became increasingly settled and the resident wolves were eliminated, the coyote population increased, filling the empty biological niche. Coyotes appear better able than wolves to live among people.
Coyotes have been known to live a maximum of 10 years in the wild and 18 years in captivity. They seem to be better than dogs at observational learning.
Reproduction
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