Dog and cat pregnancy calculator

Enter the mating date and we'll work out when to expect the birth and what to do each week: when the pregnancy shows on ultrasound, when to change food and when to prepare a place for the birth.

Your pet
If there were several matings, enter the first one.

Example: mating on 12 November

  1. 12 Novday 0MatingWrite down the date. For the first three weeks nothing visibly changes; feed as usual.
  2. 7 Decday 25UltrasoundFrom day 25 the pregnancy shows clearly on ultrasound and the vet can check the puppies' heartbeats.
  3. 12 Decday 30Vet check-upAround days 28–35 the vet can feel the foetuses. Ask about deworming and which medicines are safe during pregnancy.
  4. 17 Decday 35More foodFrom week six switch gradually to puppy food and increase the portion: by the birth about a third more than usual, in smaller and more frequent meals.
  5. 27 Decday 45X-rayFrom day 45 the skeletons show on an X-ray and the vet can count the puppies. That way you'll know when the birth is over.
  6. 6 Jan 2027day 55Whelping spotSet up a whelping box in a quiet, warm place, get pads ready and keep the vet's number at hand. Take her temperature morning and evening: a drop below 37 °C usually means birth within 24 hours.
  7. 14 Jan 2027day 63BirthMost often on day 63, normally between days 58 and 68. If she strains for over an hour without a puppy, call the vet.

Average timings based on veterinary guidelines. The vet will assess the exact timing and her condition.

Track the pregnancy and the litter in micamic

Log the mating in her passport: the due date appears in the calendar, with reminders for the ultrasound and the birth. Later add the puppies or kittens and hand them to their new owners with their vaccinations.

Create a passport

Frequently asked questions

How long are dogs pregnant?

On average 63 days from mating, normally 58 to 68. It's more precise to count from ovulation: from then the birth almost always comes 61–65 days later. Small breeds and large litters sometimes arrive a little earlier.

How long are cats pregnant?

About 65 days, normally 63 to 67, sometimes up to 70. Kittens born before day 60 are often weak and need a vet's help.

How can I tell if my dog or cat is pregnant?

At home the first signs appear no earlier than week three: a cat's nipples turn pink, a dog may become calmer and eat less. An ultrasound confirms it reliably: from days 15–20 in cats, from day 25 in dogs.

Are vaccinations and parasite treatments allowed during pregnancy?

Pregnant animals usually aren't vaccinated, so it's better to vaccinate before mating. Deworming and flea treatments only with products approved for pregnancy and after talking to the vet.

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