Average gestation in days:
Average gestation in days:
Mouse: 19 days
Rabbit: 33 days
Squirrel: 19 days
Kangaroo: 42 days
Cat: 62 days
Dog: 65 days
Lion: 108 days
Beaver: 122 days
Polar Bear: 240 days
Gorilla: 257 days
Human: 280 days
Cow: 283 days
Buffalo: 285 days
Horse: 336 days
Zebra: 365 days
Camel: 405 days
Giraffe: 450 days
Whale: 490 days
Elephant: 600+ days