Animal Pregnancy Calculator

Due Dates for Dogs, Cats & Farm Animals

Select an animal, enter the breeding date, and get the estimated due date, pregnancy progress and calendar.

Gestation Period Reference Table

Gestation lengths vary by breed and individual. Averages shown below.

Choose your animal Average gestation Gestation range Average Litter Size
Dog 63 days 58–68 days 6 puppies
Cat 65 days 63–67 days 4 kittens
Cow 283 days 279–292 days 1 calf
Horse 340 days 320–360 days 1 foal
Goat 150 days 145–155 days 1-2 kids
Sheep 147 days 144–152 days 1-2 lambs

Signs of Pregnancy

Signs vary by species, but these are common ones to watch for:

1

Changes in appetite - often a decrease early on, increasing later

2

Gradual weight gain and a growing belly

3

Nipples enlarge and darken, typically from week 3-4

4

Lethargy and reduced activity

5

Behavior changes - some animals become more affectionate, others more withdrawn

Care Tips for Pregnant Animals

Schedule a veterinary check-up early to confirm the pregnancy and plan care

Provide balanced nutrition and gradually increase food intake later in pregnancy

Keep moderate, gentle exercise and avoid stress

Prepare a quiet, warm and safe whelping area ahead of the due date

Monitor closely near the end and contact your vet with any concerns

Frequently Asked Questions

When can pregnancy be confirmed?
A veterinarian can usually confirm pregnancy by ultrasound about 3-4 weeks after breeding. Fetal counts are possible around 4-5 weeks.
How long does pregnancy last for each animal?
It varies by species: dogs about 63 days, cats about 65 days, cows about 283 days, horses about 340 days, goats about 150 days and sheep about 147 days. See the table above.
What should I prepare before the due date?
Prepare a clean, quiet whelping area, contact information for an emergency vet, and nutritionally appropriate food. Your vet can guide you through the final weeks.

Estimates only. Consult your veterinarian for accurate breeding and pregnancy management.