Dog Pregnancy Week by Week: Due Dates, Signs & Care (2026)

Waiting for puppies is exciting, and a little nerve-wracking the first time. This guide covers your dog’s pregnancy week by week, from mating to whelping, so you know what is normal, what to prepare, and when to call your vet. Start with the Dog Pregnancy Calculator to get her exact due date.

How Long Are Dogs Pregnant?

Dogs are pregnant for about 63 days from mating, with a normal range of 58 to 68 days. The range exists because ovulation does not always happen on the mating day, and breed, litter size, and the individual dog all shift the timing by a few days.

That is why vets talk about a whelping window rather than a single due date. A small breed carrying two puppies may deliver a few days early, while a large breed with a big litter may run a few days late, and both can be normal. Plan around the whole window.

How Do I Calculate My Dog’s Due Date?

Add 63 days to the mating date for the expected due date, 58 days for the earliest safe whelping date, and 68 days for the latest. If she mated over several days, use the first mating date, since ovulation usually follows the first mating.

For example, a mating date of 1 January 2026 gives a due date of 5 March 2026, with a safe window from 28 February to 10 March 2026. Use the Dog Pregnancy Calculator for the ultrasound and X-ray dates too.

What Are the First Signs of Dog Pregnancy?

The earliest signs are subtle: a slightly bigger appetite, mild tiredness, and nipples that look pinker and more prominent from about week 3. Some dogs go off their food for a day or two around week 3, much like morning sickness in people.

From week 5 the signs become obvious, with a swelling belly, steady weight gain, and nesting behavior as she seeks out quiet, enclosed spots. False pregnancy is common and looks very similar, including milk production and nesting, so signs alone never prove pregnancy. For certainty, book an ultrasound from day 25.

What Happens Week by Week During Dog Pregnancy?

Week 1 covers fertilization as embryos travel toward the uterus, weeks 2 to 3 cover implantation, week 4 brings vet confirmation by ultrasound, and weeks 5 to 9 bring visible growth, the X-ray puppy count, nesting, and finally whelping inside the 58 to 68 day window.

Weeks 1 to 3 are quiet: keep her routine, exercise, and food normal. Week 4 is your first milestone, because a vet can confirm the pregnancy by ultrasound from about day 25. Weeks 5 and 6 bring the visible changes: her belly rounds out, her appetite climbs, and this is the time to set up the whelping box. Week 7 means less strenuous exercise and smaller, more frequent meals. Week 8 is the X-ray milestone from about day 55, which counts the puppies. Week 9 is whelping week: watch for the temperature drop below 37.2 degrees Celsius, which usually signals labor within 24 hours.

What Should I Feed a Pregnant Dog?

Keep her normal food for the first 5 weeks, then switch to a high-quality puppy food and increase portions gradually. By late pregnancy she may need up to 50 percent more food than usual, split into several smaller meals because her stomach has less room.

Do not overfeed early on: extra weight in the first weeks mostly becomes fat on the mother, not growth for the puppies, and overweight mothers face harder deliveries. Puppy food suits late pregnancy because it is denser in protein, fat, and calcium. Ask your vet before adding calcium supplements, since excess calcium can cause problems.

How Should I Prepare for Whelping?

Set up a whelping box in a warm, quiet, draft-free room at least two weeks before the due date, and let her sleep in it so it smells familiar. Stock clean towels, a bulb syringe, dental floss for tying cords if needed, a heating pad on low under half the box, and your vet’s emergency number.

The box should fit her stretched out fully, with sides low enough for her to step over but high enough to keep puppies inside. Line it with washable bedding and keep the room around 24 to 26 degrees Celsius. If you need to move her and the puppies, plan transport with the Pet Transport Cost Calculator and read how much pet transport costs in 2026 before booking.

When Should I Call the Vet During Dog Pregnancy?

Call your vet for the routine checks first: an ultrasound from day 25 and an X-ray from day 55. Call urgently for strong contractions over 30 minutes with no puppy, more than 2 hours between puppies, heavy bleeding, or a puppy visibly stuck.

Also call the same day if she passes day 68 with no labor, since an overdue pregnancy may need induction or a caesarean. After whelping, watch for foul-smelling discharge, fever, refusal to eat for over 24 hours, or a mother ignoring her puppies. When in doubt, call early.

What Do New Dog Owners Ask Most About Dog Pregnancy?

These are the questions first-time breeders ask most often, covering exercise, litter size, vaccinations, and weaning. Each answer below is brief, and for dates tailored to your own dog, run her mating date through the Dog Pregnancy Calculator before you plan anything around them.

Can my dog exercise while pregnant?

Yes, with adjustments. Keep normal walks for the first 6 weeks, then switch to shorter, gentler walks and stop jumping and rough play. Light movement keeps her toned for labor, but avoid exhaustion and overheating late in pregnancy.

How many puppies will my dog have?

Small breeds often have 1 to 4 puppies, medium breeds 4 to 6, and large breeds 6 to 12 or more. The only reliable count comes from an X-ray from about day 55.

Should I change her vaccinations or worming?

Ask your vet, never guess. Some worming treatments are safe in pregnancy and some are not, and vaccination timing may shift around whelping. Bring her medical history to the first pregnancy check.

How long after birth can puppies leave their mother?

Eight weeks is the widely recommended minimum. Puppies learn bite inhibition and social skills from their mother and littermates, and leaving too early causes behavior problems that are hard to undo.

Disclaimer: This guide is general information only, not veterinary advice. Due dates are estimates based on a typical 63-day gestation. Confirm pregnancy and delivery plans with a licensed veterinarian.