Donkey Gestation Calculator

A jenny carries her foal for roughly a year, noticeably longer than a mare, and some pregnancies run well past twelve months. Enter the breeding or exposure date above for a due window, then use the notes below to plan. Always confirm management decisions with your veterinarian.

Donkey gestation at a glance

These are typical averages; individual jennies vary widely, and long pregnancies are normal in donkeys.

• Average length: 365 days
• Typical range: 11 to 14 months
• Common range: 355 to 370 days
• Foals per pregnancy: usually one
• Twins: rare and risky
• Colostrum: vital first hours
• Foal stands: within 1 to 2 hours
• Female name: jennet or jenny
• Male name: jack
• Baby name: foal
• Weaning age: 6 to 8 months
• First breeding: skeletal maturity

Signs foaling is near

Donkeys are stoic and often foal quietly at night, so subtle changes matter.

• Udder fills
• Teats wax over
• Milk drips
• Vulva relaxes
• Tail head softens
• Restlessness
• Pacing
• Separating from herd
• Sweating flanks
• Frequent lying down
• Pawing bedding
• Reduced appetite

Frequently asked questions

How long are donkeys pregnant?

Donkey gestation averages about 365 days, or roughly twelve months, which is longer than the eleven months typical for horses. The normal range is wide, commonly 11 to 14 months, so a jenny carrying past her expected date is usually no cause for alarm on its own.

Why is donkey gestation longer than a horse?

Donkeys and horses are different species with different reproductive timelines, and donkeys simply carry longer on average. This matters most with mule and hinny crosses, where the longer donkey influence can shift the expected due date, so plan foaling watch on the later end.

How can I tell when my jenny is close to foaling?

Watch the udder filling, the teats waxing over, and the muscles around the tail head softening in the final days. Many jennies foal quietly overnight, so a foaling alarm or regular night checks help. If labor stalls or a foot appears wrong, call your veterinarian at once.

Do donkeys usually have one foal or twins?

A single foal is normal. Twin pregnancies are uncommon and carry real risk to both foals and the jenny, so a vet who confirms twins early may recommend management to protect the pregnancy. Any twin diagnosis should be discussed with your veterinarian right away.