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I.H The gestation period in a viviparous animal
Animal

Animals are a major group of multicellular, eukaryotic organisms of the Kingdom Animalia or Metazoa. Their body plan eventually becomes fixed as they develop, although some undergo a process of metamorphosis later on in their life....
 is the length of its gestation
Gestation

Gestation is the carrying of an embryo or fetus inside a female viviparous animal. Mammals during mammalian pregnancy can have one or more gestations at the same time ....
.






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I.H The gestation period in a viviparous animal
Animal

Animals are a major group of multicellular, eukaryotic organisms of the Kingdom Animalia or Metazoa. Their body plan eventually becomes fixed as they develop, although some undergo a process of metamorphosis later on in their life....
 is the length of its gestation
Gestation

Gestation is the carrying of an embryo or fetus inside a female viviparous animal. Mammals during mammalian pregnancy can have one or more gestations at the same time ....
. In humans this is 266 days (38 weeks), but varies for other animals. Gestation period is measured from conception
Fertilisation

Fertilisation , is the fusion of gametes to produce a new organism. In animals, the process involves a sperm fusing with an ovum, which eventually leads to the development of an embryo....
 to birth
Birth

Birth is the act or process of bearing or bringing forth offspring . The offspring is brought forth from the mother. Different forms of birth are oviparity, vivipary or Ovoviviparity....
. An elephants is 20-22 monthsXxX







































































































































































































































































































Animal


Gestation (days)


ass

365


baboon

187

bear (black)

210

bear (grizzly)

225

bear (polar)

240

beaver

122

buffalo (American)

270

camel (Bactrian)

~410

cat (domestic)

58-65

chimpanzee

230-250

chinchilla

110-120

chipmunk

31

cow

279-292

deer (white-tailed)

201

dog (domestic)

58-70

elephant (Asian)

645

elk (Wapiti)

240-250

fox (red)

52

giraffe

420-450

goat (domestic)

145-155

gorilla

257

guinea pig

68

hippopotamus

225-250

horse

330-342

kangaroo

42

leopard

92-95

lion

108

llama

330

mink

40-75

monkey (rhesus)

164

moose

240-250

mouse (domestic white)

19

mouse (meadow)

21

muskrat

28-30

opossum (American)

12-13

otter

270-300

pig (domestic)

112-115

porcupine

112

puma

90

rabbit (domestic)

30-35

raccoon

63

rhinoceros (black)

450

seal

330

sea lion (California)

350

sheep (domestic)

144-151

squirrel (gray)

30-40

tiger

105-113

whale (sperm)

480-500

wolf

60-68

zebra (Grant's)

365

Birds

chicken

20-22

duck

26-28

finch

11-14

goose

25-28

parrot

17-31

pheasant

24

pigeon

10-18

quail

21-23

swan

33-36

turkey

28


See also

  • mammalian gestation
  • pregnancy
    Pregnancy

    Pregnancy is the carrying of one or more offspring, known as a fetus or embryo, inside the uterus of a female. In a pregnancy, there can be multiple gestations, as in the case of twins or Multiple birth....