Sign in
Back to Gestation Calculators Donkey

Donkey Gestation Calculator

This donkey calculator uses 365 days after breeding. Enter a date to estimate foaling.

Estimation Method

Donkey gestation at a glance

Average used by this calculator365 days (about 12 months)
Window shown by this calculator355 to 370 days after breeding
Due date formulaBreeding date + 365 days
Birth is calledFoaling
Reported range11 to 14.5 months in the Donkey Sanctuary guide
NewbornFoal

The calculator shows a narrow 355 to 370 day planning band, but the Donkey Sanctuary reports gestation from 11 to 14.5 months; the displayed band is not a normal limit.

Donkey foaling timeline

Last month, often about 3 weeks before birthThe udder may gradually enlarge and begin producing milk.
Several days before birthThe teats may enlarge.
24 to 48 hours before birthWaxing may appear on the teats.
Near foalingThe pelvic ligaments may soften and the vulva may lengthen.

Frequently asked questions

How long is a donkey pregnant?

The donkey calculator uses 365 days after breeding and a 355 to 370 day Foaling Planning Band. The Donkey Sanctuary reports averages of 365 to 376 days and a range of 11 to 14.5 months; this calculator band is not a clinical normal limit.

How do I calculate a donkey foaling date?

Enter the breeding date and the donkey calculator adds 365 days for an estimated foaling date; a birth outside its 355 to 370 day band is not automatically abnormal.

What signs show a jenny is close to foaling?

A jenny may show an enlarging udder, larger teats, softened pelvic ligaments, a longer vulva and restlessness before foaling.

When should I call a veterinarian during donkey foaling?

Aronoff, in Veterinary Care of Donkeys, says a jenny straining hard for 20 to 30 minutes with no foal appearing needs assistance; call your veterinarian.

Sources

Reviewed by Elliott Garber, DVM · Last reviewed