Animal Development Time
| Animal
|
Average Days
|
| Bear (Black)
|
210
|
| Bison
|
270
|
| Budgerigar
|
18
|
| Camel
|
410
|
| Cat
|
65
|
| Cattle
|
281
|
| Chicken
|
21
|
| Chimpanzee
|
236
|
| Chinchilla
|
111
|
| Coyote
|
63
|
| Deer (Mule)
|
200
|
| Dog
|
63
|
| Donkey
|
365
|
| Duck
|
28
|
| Duck (Muscovy)
|
35
|
| Elephant
|
660
|
| Elk, Wapiti
|
255
|
| Ferret
|
42
|
| Finch
|
14
|
| Fox
|
52
|
| Giraffe
|
425
|
| Goat
|
150
|
| Goose
|
28
|
| Gorilla
|
270
|
| Guinea fowl
|
28
|
| Guinea pig
|
68
|
| Hare
|
36
|
| Hippopotamus
|
240
|
| Horse
|
338
|
| Human
|
274
|
| Leopard
|
95
|
| Lion
|
108
|
| Llama
|
350
|
| Marmoset
|
150
|
| Mink (European)
|
41
|
| Monkey (Macaque)
|
180
|
| Moose
|
240
|
| Mouse
|
20
|
| Muskox
|
255
|
| Muskrat
|
29
|
| Nutria, Coypu
|
130
|
| Opossum
|
12
|
| Otter
|
285
|
| Panther
|
90
|
| Parrot
|
26
|
| Pheasant
|
24
|
| Pig
|
114
|
| Pigeon
|
18
|
| Porcupine
|
210
|
| Pronghorn
|
230
|
| Quail
|
16
|
| Rabbit
|
31
|
| Raccoon
|
63
|
| Rat
|
21
|
| Reindeer
|
225
|
| Rhinoceros (African)
|
480
|
| Seal
|
330
|
| Sheep
|
150
|
| Shrew
|
20
|
| Skunk
|
63
|
| Squirrel (Gray)
|
40
|
| Swan
|
35
|
| Tapir
|
390
|
| Tiger
|
103
|
| Turkey
|
28
|
| Walrus
|
450
|
| Whale (Sperm)
|
450
|
| Wolf
|
63
|
| Woodchuck
|
31
|
|
| Animal Notes and Table Data Sources
|
|
Notes
- Each animal species has different variations +/- the average values shown in the table.
- Gestation is the carrying of an animal embryo or fetus inside a female viviparous animal.
- Incubation is the laying of an egg (birds, reptiles, monotremes) with development occurring outside the female animal.
Data Sources
- The House Mouse: Atlas of Mouse Development by Theiler Springer-Verlag, NY (1972, 1989).
- The Genetics of the Dog. E Ostrander, E. and Ruvinsky, A. ISBN: 9781845939403 (2012)
- Merck Veterinary Manual. Aiello, S.E. and Moses, M.A. (ed) ISBN: 0911910506 (2013) Online
- Witschi, E. (1962) Development: Rat. In: Growth Including Reproduction and Morphological Development. Altman, P. L. , and D. S. Dittmer, ed. Fed. Am. Soc. Exp. Biol., Washington DC, pp. 304-314.
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