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Quick answer
Dogs are pregnant for about 63 days (roughly 9 weeks), though it can range from about 58 to 68 days from conception. Because the exact date of conception is hard to pin down, your vet will usually estimate the due date from breeding dates, a physical exam, and ultrasound or X-ray. Below is the full week-by-week timeline, the signs of labor, and how to care for a pregnant dog.
How long are dogs pregnant?
The average canine gestation period is 63 days from ovulation. Measured from the first mating it can look longer or shorter (about 58–68 days), because sperm can survive for several days and eggs need time to mature. For an accurate due date, your veterinarian can confirm pregnancy and timing — ultrasound from around day 25–30, and X-ray from about day 45 to count puppies.
Dog pregnancy week by week
| Stage | What’s happening | What to do |
|---|---|---|
| Weeks 1–2 | Fertilization; embryos travel to the uterus. Few outward signs. | Keep normal diet and routine; avoid medications unless your vet approves. |
| Week 3 | Embryos implant in the uterine wall. Some dogs show mild appetite changes. | Schedule a vet visit to confirm pregnancy. |
| Week 4 | Ultrasound can confirm pregnancy; fetuses develop quickly. Possible mild morning-sickness-type signs. | Ultrasound around day 25–30; ask your vet about nutrition. |
| Week 5 | Fetuses gain structure; the mother’s abdomen begins to fill out. | Begin gradually increasing food per your vet’s guidance. |
| Week 6 | Belly noticeably larger; nipples enlarge and darken. | Feed a high-quality, calorie-dense diet in smaller, frequent meals. |
| Week 7 | Puppies are well developed; the mother may seek extra rest. | Prepare a quiet whelping area; X-ray can count puppies (~day 45+). |
| Week 8 | Milk may appear; nesting behavior begins. | Set up the whelping box; gather supplies; confirm the plan with your vet. |
| Week 9 | Final development; body temperature often drops ~24 hours before labor. | Monitor temperature twice daily; watch for signs of labor. |
Signs your dog is in labor
- A drop in rectal temperature (often below ~99°F / 37.2°C) ~12–24 hours before labor
- Restlessness, panting, pacing and nesting
- Loss of appetite in the final 24 hours
- Visible contractions and the start of delivery
If your dog strains hard for more than 30–60 minutes without producing a puppy, more than ~2 hours pass between puppies, or you see dark green discharge before the first puppy, contact your vet or emergency clinic right away.
How to care for a pregnant dog
- Nutrition: follow your vet’s guidance — most pregnant dogs move to a calorie-dense diet in the second half of pregnancy.
- Gentle exercise: keep her moving with light activity; avoid rough play late in pregnancy.
- Vet checkups: confirm pregnancy, count puppies, and plan the whelping.
- Daily wellness: a balanced gut and steady immune support help a busy mom-to-be. Always clear any supplement with your vet first.
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For a nursing mom’s daily wellness, some owners also use Liquid Probiotic or Immune Support drops — always with your vet’s okay.
Frequently asked questions
How many weeks are dogs pregnant?
About 9 weeks — an average of 63 days from ovulation, with a typical range of 58–68 days.
How can I tell if my dog is pregnant?
Your vet can confirm with an ultrasound from around day 25–30, a blood test, or an X-ray later in pregnancy. Early signs at home can include appetite changes and enlarged nipples.
How many puppies will my dog have?
It varies widely by breed and size. An X-ray from about day 45 lets your vet count the puppies so you know what to expect.
What are the first signs of labor?
A drop in body temperature about a day before, then restlessness, panting, nesting and loss of appetite, followed by contractions.
When should I call the vet during labor?
If she strains hard for 30–60 minutes with no puppy, if more than ~2 hours pass between puppies, or if you see dark green discharge before the first puppy.
The bottom line
Dogs are pregnant for about 63 days. Confirm the pregnancy and due date with your vet, follow a week-by-week plan, prepare a quiet whelping space, and know the signs that mean it’s time to call for help.
Veterinary disclaimer: Dog Health Insider is educational and does not employ a veterinarian on staff. This is not a substitute for professional veterinary advice. Always consult your veterinarian about your pregnant dog’s care.
Sources / further reading
- American Kennel Club — dog pregnancy: signs, care & timeline (akc.org)
- Merck Veterinary Manual — pregnancy and parturition in dogs (merckvetmanual.com)
- VCA Animal Hospitals — pregnancy and whelping in dogs (vcahospitals.com)