Dog Pregnancy Calculator — Due Date & Week-by-Week Timeline
Enter your dog's breeding date to calculate her due date, track pregnancy week by week, and learn what to expect at every stage of the 63-day gestation.
Dog pregnancy lasts approximately 63 days from conception to birth
Quick Answer:
Dog pregnancy lasts approximately 63 days (9 weeks) from ovulation. Puppies can arrive 1-2 days early or late. Ultrasound can confirm pregnancy at day 25-35, and X-rays can count puppies after day 45.
Calculate Due Date
If bred multiple times, use the date of the first breeding
Dog Pregnancy Week-by-Week Timeline
Week 1: Fertilization
Eggs are fertilized and begin dividing as they travel to the uterus.
Week 2: Implantation
Embryos implant in the uterine wall around day 16.
Week 3: Early Development
Major organ development begins. Embryos are about 1cm long.
Week 4: Fetal Development
Fetuses develop eyes, spine, and facial features. Ultrasound can confirm pregnancy.
Week 5: Organ Development
Toes, claws, and whiskers form. Gender can be determined.
Week 6: Coat Development
Puppies develop pigmentation and coat markings. Movement may be felt.
Week 7: Growth Phase
Rapid growth continues. Puppies are nearly fully formed.
Week 8: Pre-Whelping
Puppies are fully developed. Mother begins preparing to give birth.
Week 9: Birth Week
Puppies can arrive anytime! Watch for signs of labor.
Signs of Labor in Dogs
Watch for these signs that labor is approaching:
12-24 Hours Before:
- * Temperature drops below 99°F (37.2°C)
- * Loss of appetite
- * Nesting behavior intensifies
- * Restlessness and pacing
Active Labor Signs:
- * Visible contractions
- * Straining and pushing
- * Water breaks (clear fluid)
- * Panting and shivering
When to call the vet:
- * More than 2 hours of strong contractions without a puppy
- * More than 4 hours between puppies
- * Green discharge before any puppies are born
- * Mother appears in distress or exhausted
Frequently Asked Questions
How long are dogs pregnant?▼
Dogs are pregnant for approximately 63 days (about 9 weeks) from the date of ovulation. This can vary by 1-2 days depending on the breed and individual dog. Smaller breeds may deliver slightly earlier, while larger breeds may go a day or two longer.
How can I tell if my dog is pregnant?▼
Early signs include decreased appetite, lethargy, and nipple enlargement around week 3. A vet can confirm pregnancy via ultrasound at days 25-35 or blood test at day 25+. By week 5-6, you'll notice weight gain, enlarged belly, and potentially see/feel puppy movement.
When can you do an ultrasound on a pregnant dog?▼
Ultrasound can detect pregnancy as early as day 25-28 after breeding. The best time for ultrasound is between days 25-35 to confirm pregnancy and check fetal heartbeats. X-rays are better for counting puppies and are done after day 45 when skeletons are visible.
What should I feed my pregnant dog?▼
During the first 4-5 weeks, maintain normal feeding. After week 5, gradually increase food by 25-50% and switch to a high-quality puppy food, which has more calories and nutrients. Feed smaller, more frequent meals as the pregnancy progresses since the puppies take up stomach space.
What are signs of labor in dogs?▼
Signs labor is approaching: nesting behavior, loss of appetite, temperature drop below 99°F (usually 12-24 hours before labor), restlessness, and panting. Active labor signs include visible contractions, straining, and the water breaking. First puppy usually arrives within 1-2 hours of active labor.
Dog Pregnancy: What Every Owner Should Know
Dog pregnancy (gestation) lasts approximately 63 days from ovulation — about 9 weeks. Understanding the timeline helps you provide proper care, schedule vet checkups, and prepare for whelping. Here's what to expect throughout the journey.
Pregnancy Nutrition Guide
Proper nutrition is critical during pregnancy. During weeks 1-4, maintain her regular diet — overfeeding early can cause obesity complications. Starting at week 5, gradually transition to a high-quality puppy food (which has higher calorie and nutrient density) and increase portions by 25-50%. By weeks 7-9, switch to 3-4 smaller meals per day since the puppies compress her stomach.
Always provide fresh water — pregnant dogs drink significantly more. Use our dog water intake calculator to estimate her daily needs, keeping in mind pregnant dogs may need 50-100% more water than usual.
Grooming a Pregnant Dog
Grooming during pregnancy requires extra care. During the first 5 weeks, normal grooming is fine. In the last trimester, keep sessions shorter and gentler. Many groomers offer a "pre-whelping groom" around week 7-8 that includes a sanitary trim around the belly and hindquarters for easier nursing and cleanliness during delivery.
Find experienced groomers near you who specialize in gentle handling for pregnant dogs. For cost information, check our grooming cost guide.
Preparing for Whelping
Create a whelping area 1-2 weeks before the due date:
- • Quiet, warm room away from foot traffic (75-80°F)
- • Whelping box with low sides she can step over but puppies cannot
- • Clean towels, newspapers, and puppy pads
- • Digital thermometer (take her temperature twice daily starting at day 58)
- • Emergency vet contact number
- • Dental floss and clean scissors (for tying and cutting umbilical cords if needed)
For more details about the breeding timeline, see our dog pregnancy stages guide and heat cycle calculator to understand when conception may have occurred.
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