Dog pregnancy is short and moves fast. Knowing the timeline helps you prepare for whelping, schedule vet checks, and recognize when something is off.
How long is a dog pregnant?
The average canine gestation is 63 days from ovulation. Because sperm can survive several days and eggs need time to mature, the count from the mating date is less precise — that's why estimates span 58 to 68 days. Your vet can date the pregnancy more accurately with ultrasound or hormone testing.
To get an estimated due date, enter the mating or ovulation date into our dog pregnancy calculator, which counts forward 63 days and shows the likely whelping window.
Dog pregnancy week by week
| Stage | What's happening |
|---|---|
| Weeks 1–3 | Fertilization and implantation; few outward signs. Keep normal routines. |
| Week 4 | A vet can often detect pregnancy by ultrasound; some dogs show mild appetite changes. |
| Week 5 | Puppies develop rapidly; the mother's abdomen begins to enlarge and nutrition needs rise. |
| Weeks 6–7 | Weight gain is clear; switch to a higher-calorie diet as advised by your vet. |
| Week 8 | Puppies are nearly developed; the mother may start nesting. Prepare the whelping box. |
| Week 9 | Delivery is imminent. A drop in body temperature often signals labor within 24 hours. |
Signs your dog is pregnant
Early signs are subtle: slightly reduced appetite, more sleeping, and calmer behavior. From around week 5, weight gain and a firmer, larger abdomen become noticeable, and the nipples enlarge. The only reliable early confirmation is a veterinary ultrasound or blood test.
Preparing for whelping
Set up a quiet whelping box a week or two before the due date so the mother can settle into it. Many owners take the dog's temperature twice daily in the final week — a noticeable drop (often below about 99°F) commonly precedes labor by around 24 hours. Have your vet's after-hours number ready in case of complications.
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Frequently Asked Questions
How long are dogs pregnant?
Dogs are pregnant for about 63 days, or roughly nine weeks, measured from ovulation. Delivery can range from 58 to 68 days after mating because the fertile window varies.
How can I tell how far along my dog is?
A veterinarian can date the pregnancy with ultrasound or hormone tests. If you know the mating date, a dog pregnancy calculator estimates the due date by counting forward 63 days.
What are the first signs a dog is pregnant?
Early signs include a slightly reduced appetite, more sleeping, and calmer behavior, followed by weight gain and an enlarging abdomen from around week five.
How do I know when my dog is about to give birth?
In the final week, a drop in body temperature (often below about 99°F) commonly signals that labor will begin within roughly 24 hours, along with nesting behavior.