Donkey Gestation Period: How Long Is a Donkey Pregnant?

A donkey is pregnant for about 365 days, roughly 11 months and 4 weeks. Normal foaling happens between 340 and 390 days, and a typical litter is 1 foal.

How long is a donkey pregnant?

A donkey carries her foal for an average of 365 days, or about 11 months and 4 weeks. Counting from the breeding date, foaling is normal anywhere from day 340 to day 390.

Key checkpoints across the 365-day donkey gestation, measured in days from breeding:

Donkey gestation timeline from day 0 to day 365: day 16 Early ultrasound: confirm pregnancy and check for twins; day 60 Second scan — twin pregnancies in donkeys are high risk; day 210 Vaccination and worming ahead of foaling; day 300 Increase the ration; most foal growth is in the last trimester; day 345 Earliest normal foaling — move her to the foaling area; day 365 Expected foaling (a year is the practical rule); day 390 Still no foal? Donkeys often go this long, but have a vet check her.

Donkey gestation stages, month by month

Days 1–90: early pregnancy

Scan at around day 16 to confirm pregnancy and check for twins, then again near day 60. Twins are dangerous in donkeys and are best managed early by a vet. Keep work, feed and company unchanged; the jenny needs no extra feed at all in this period.

Days 91–240: mid pregnancy

Requirements stay close to maintenance and obesity is the real risk — an over-fat jenny is far more likely to develop hyperlipaemia later. Keep her on a high-fibre, low-sugar diet with plenty of movement, and do routine dentals, foot trimming and vaccinations now.

Days 241–330: late pregnancy

The foal now grows quickly. Increase feed gradually and keep her eating consistently, since anything that stops a pregnant donkey eating for a day or two can trigger hyperlipaemia. Worm and vaccinate to her vet's schedule so colostrum carries good protection.

Days 331–390: foaling window

This is a window, not a date. The udder fills, the vulva slackens and a waxy plug may appear on the teats. Give her a large, quiet, well-bedded space where she can be alone, check her at night without disturbing her, and expect the foal to arrive with almost no warning.

Signs a donkey is pregnant

No return to season at the expected three-week interval and rejection of the jack
Ultrasound from about day 16 is the only accurate early confirmation
The belly drops and broadens noticeably during the last three months
Udder development in the final weeks, sometimes with waxy beads on the teats

Signs of approaching foaling

She becomes markedly more private, seeking out corners and moving away from company
Restlessness, sweating and tail swishing in the hours before foaling — often at night
Contact your vet if labour stalls, if the animal strains without progress, or if there is abnormal discharge before foaling begins.

What affects donkey gestation length

Donkeys carry longer than horses — about 365 days rather than 340 — and a range of 340 to 390 days is entirely normal, so a donkey 'overdue' by horse standards may be perfectly on time.
That long, variable gestation is the single biggest reason donkey owners think something is wrong: there is no reliable way to narrow the date to a week, let alone a day.
Donkeys are prone to hyperlipaemia, a life-threatening fat metabolism disorder triggered by stress or going off feed in late pregnancy, and it is the most common reason a pregnant jenny needs emergency treatment.
Jennies are extremely private about foaling and will often hold off until they are alone at night; most foalings are unobserved even on well-run yards.
A jenny can come back into season within 10 days of foaling, so a jack must be kept separate unless a foal every year is genuinely wanted.

Estimate your donkey's foaling date

Enter the breeding date for an estimated foaling date at 365 days.

Estimate a donkey due date

Breeding date

Estimated foaling date

Sunday, 12 September 2027

Earliest

18 Aug 2027

Latest

7 Oct 2027

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Donkey pregnancy FAQs

How long is a donkey pregnant?

About 365 days — a full year — with a normal range of roughly 340 to 390 days. Donkeys carry around three to four weeks longer than horses, and there is far more variation between individuals.

My donkey is past a year. Is she overdue?

Not necessarily. Gestations of 375 to 390 days happen regularly and can produce a completely healthy foal. Have your vet check her rather than assuming she needs inducing; induction in donkeys carries real risk.

How is a donkey pregnancy confirmed?

Ultrasound from about day 16, repeated near day 60 to check the pregnancy is progressing and to rule out twins. Blood tests are also available. Waiting for a visible belly wastes months and misses twins entirely.

What is hyperlipaemia and why does it matter now?

It is a serious metabolic disease where fat floods the bloodstream after a donkey stops eating properly, and pregnant and lactating jennies are the highest risk group. Never let a pregnant donkey go off feed: a jenny not eating for more than a day is a same-day vet call.

Can a donkey get pregnant again straight after foaling?

Yes — often within 10 days of foaling. Separate the jack immediately after foaling unless you actively want another foal, because back-to-back pregnancies are hard on the jenny.

More gestation pages

Livestock gestation chart