Dog Pregnancy Calculator
Calculate your dog's due date and get a week-by-week pregnancy timeline. Track important milestones from conception to whelping.
Dog Pregnancy Timeline
Weeks 1-3
Fertilization and implantation. Few visible signs. Maintain normal routine.
Weeks 4-6
Embryos develop. Vet can confirm pregnancy. Morning sickness possible.
Weeks 7-9
Puppies fully formed. Nesting begins. Prepare whelping box.
Complete Guide to Dog Pregnancy
Dog pregnancy lasts approximately 63 days from conception, though this can vary from 58 to 68 days depending on the breed and the exact timing of fertilization. Unlike human pregnancies, canine pregnancies progress rapidly, so by the time most owners notice physical changes, their dog is already past the halfway point.
The most reliable way to confirm pregnancy is an ultrasound at your veterinarian's office between days 25-30. Before that, blood tests can detect the hormone relaxin after day 22. An X-ray after day 45 is the best way to count the number of puppies your dog is carrying, which helps you prepare for whelping and know when labor is complete.
Feeding a Pregnant Dog
Nutrition during pregnancy is crucial for both the mother and developing puppies. During the first 5 weeks, your dog's calorie needs remain mostly unchanged, so just maintain her regular high-quality diet. Starting around week 5, gradually increase food intake by 10% per week until she's eating about 25-50% more than her pre-pregnancy amount by the final week.
Many veterinarians recommend switching to a high-quality puppy food during the last 3-4 weeks of pregnancy. Puppy food has higher calorie density, more protein, and higher calcium content, all of which the mother needs for milk production and fetal development. Use our dog calorie calculator to estimate adjusted calorie needs during pregnancy, and check our food recommendations by breed for specific suggestions.
Warning Signs During Dog Pregnancy
🚨 Call Your Vet Immediately
- • Green or black vaginal discharge before labor
- • Straining for more than 30 minutes without producing a puppy
- • More than 2 hours between puppies during active labor
- • Temperature drop below 98°F followed by no labor within 24 hours
⚠️ Monitor Closely
- • Loss of appetite lasting more than 24 hours (weeks 1-7)
- • Excessive vomiting beyond mild morning sickness
- • Lethargy or depression lasting multiple days
- • Swollen, painful mammary glands before delivery
Breed Size and Litter Size
Litter size varies dramatically by breed. Toy breeds like Chihuahuas and Yorkshire Terriers typically have 1-3 puppies, while large breeds like Labrador Retrievers average 6-8 puppies. Giant breeds like Great Danes can have 8-12 or more. First-time mothers typically have smaller litters than experienced mothers. If you're new to dog breeding, consult your vet about whether a natural delivery or cesarean section is recommended for your breed. Brachycephalic breeds like French Bulldogs and English Bulldogs often require C-sections.
Frequently Asked Questions
How long is a dog pregnant?
Dog pregnancy (gestation) lasts approximately 63 days or about 9 weeks from the date of conception. However, it can range from 58 to 68 days depending on the breed and individual dog.
What are the signs of dog pregnancy?
Early signs include decreased appetite, nipple enlargement, and behavioral changes around 2-3 weeks. Later signs include weight gain, enlarged abdomen, nesting behavior, and increased appetite in the final weeks.
When can I confirm my dog is pregnant?
A veterinarian can confirm pregnancy via ultrasound around 25-30 days after breeding, or through abdominal palpation at 28-35 days. Blood tests can detect pregnancy hormones after day 25.
How many puppies will my dog have?
Litter size varies by breed. Small breeds typically have 1-4 puppies, medium breeds 4-8, and large breeds 8-12 or more. Your vet can estimate litter size via X-ray after day 45.
What should I feed my pregnant dog?
During the first 5 weeks, maintain her regular diet. In the last 4 weeks, gradually switch to high-quality puppy food and increase portions by 25-50%. Fresh dog food subscriptions often offer pregnancy-specific nutrition.
When should I prepare a whelping box?
Set up a whelping box 1-2 weeks before the due date (around day 50-55). Choose a quiet, warm location and let your dog get comfortable with it before labor begins.