Animal Gestation Calculator

Cattle gestation varies by breed, with dairy cattle averaging 275-282 days and beef breeds 283-294 days.

Dog gestation averages 63 days from ovulation, or 58-68 days from breeding date. LH surge testing is needed for precise timing.

Goat gestation averages 150 days (5 months), varying by breed and number of kids.

Sheep gestation averages 147 days (about 5 months), varying slightly by breed and number of lambs.

Horse gestation averages 340 days (11 months), with normal range 320-370 days. Mare gestation can vary significantly.

Pig gestation is famously known as '3 months, 3 weeks, 3 days' (114 days). Very consistent across breeds.

Rabbit gestation averages 31 days. Does can breed again immediately after giving birth.

Cat gestation averages 63-65 days. Queens may show 'pinking' of nipples around day 21.

White-tailed deer gestation averages 201 days. Timing ensures fawns are born in spring.

Llama gestation averages 350 days (11.5 months). Most births occur during daylight hours.

Alpaca gestation averages 345 days. Like llamas, typically give birth in the morning.

Ferret gestation is short, averaging 42 days. Jills need close monitoring as due date approaches.

Donkey gestation averages 365 days (12 months), slightly longer than horses. Jennies typically give birth to a single foal.

Buffalo (bison) gestation averages 285 days, similar to cattle. Cows typically give birth to a single calf in spring.

Camel gestation averages 13 months (390 days). Dromedary and Bactrian camels have similar gestation periods.

Yak gestation averages 258 days (8.5 months). Adapted to high-altitude breeding, calves are typically born in spring.

Chicken egg incubation takes 21 days. Temperature and humidity control are critical for successful hatching.

Duck egg incubation averages 28 days. Muscovy ducks take 35 days, while most other breeds take 28 days.

Goose egg incubation takes 28-32 days depending on breed. Larger breeds may take slightly longer.

Turkey egg incubation takes 28 days. Proper temperature and humidity are essential for successful hatching.

Quail egg incubation is quick, taking only 17-18 days. Coturnix quail are popular for small-scale farming.

Guinea pig gestation averages 68 days (about 2 months). Sows can have 1-6 pups per litter.

Hamster gestation is very short, averaging 16 days. Syrian hamsters take 16 days, dwarf hamsters 18-21 days.

Chinchilla gestation averages 111 days (about 3.5 months). Litters typically consist of 1-6 kits.

Hedgehog gestation averages 35 days. Litters typically have 3-5 hoglets, born with soft spines.

Elephant gestation is the longest of any land mammal, averaging 22 months (645 days). African and Asian elephants have similar gestation periods.

Giraffe gestation averages 15 months (457 days). Calves are born standing and can walk within an hour.

Zebra gestation averages 12-13 months (375 days). Foals are born with brown and white stripes that darken with age.

Kangaroo gestation is remarkably short at 33-36 days. Joeys are born tiny and continue development in the pouch for 6-8 months.

Giant panda gestation averages 135 days but varies widely (95-160 days) due to delayed implantation. Cubs are born tiny and helpless.

Reindeer (caribou) gestation averages 228 days (7.5 months). Calves are typically born in spring when food is abundant.

Moose gestation averages 235 days (about 8 months). Cows typically give birth to 1-2 calves in late spring.

Bear gestation varies by species (180-270 days) with delayed implantation. Cubs are born during winter hibernation.

Wolf gestation averages 63 days, similar to domestic dogs. Pups are born in spring in a den prepared by the pack.