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Length of Pregnancy in some Mammals

Animal Gestation Period
(days)
Animal Gestation Period
(days)
Camel 406 Hyena 110
Cat 62 Kangaroo 40
Cow 280 Lion 108
Chimpanzee 237 Mink 50
Dog 62 Monkey, rhesus 164
Dolphin 276 Mouse 21
Elephant, African 640 Opposum 13
Ferret 42 Orangutan 245-275
Fox 52 Pig 113
Giraffe 395-425 Rabbit 32
Goat 151 Rat 21
Guinea pig 68 Reindeer 215-245
Hamster 16 Seal, northern fur 350
Hedgehog 35-40 Sheep 148
Horse 337 Skunk 62
Human 266 Squirrel, grey 44

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Last updated: 2005-01-17