Dog Pregnancy Calculator
Track your dog's pregnancy timeline and estimate whelping dates with our simple calculator.
DISCLAIMER: This calculator provides estimates only and should not replace professional veterinary care. Always consult with a licensed veterinarian for proper medical advice regarding your dog's pregnancy.
Pregnancy Timeline
Estimated Due Date:
Current Pregnancy Stage:
Days Until Due Date:
Week-by-Week Timeline
About Dog Pregnancy
Dog pregnancy, also known as canine gestation, typically lasts about 63 days from conception, although this can vary by breed size and individual dog. Our dog pregnancy calculator helps you track your dog's pregnancy journey and prepare for the arrival of puppies.
Canine Gestation Period
The average dog pregnancy lasts approximately 63 days (about 9 weeks) from the time of conception. However, this can vary between 58-68 days depending on several factors including breed size and litter size.
- Small Breeds: Typically 63 days, but can deliver as early as day 58
- Medium Breeds: Average of 63 days
- Large Breeds: Average of 63 days
- Giant Breeds: May extend to 65-68 days
Pregnancy Stages & Timeline
Weeks 1-3: Early Development
Fertilized eggs travel to the uterine horns and embed in the uterine lining. Few visible signs at this stage, though some dogs may experience morning sickness.
Weeks 4-5: Middle Stage
Puppies begin to develop more rapidly. The mother dog's belly will begin to swell noticeably, and her nipples may become more prominent and darker.
Weeks 6-7: Late Stage
Puppies continue to grow, and the mother's abdomen becomes obviously distended. You may be able to feel puppy movement. Mother dog may begin nesting behaviors.
Weeks 8-9: Pre-Whelping
Final development stage before birth. The mother will look for a quiet place to deliver. Milk may be expressed from the teats, and her temperature will drop 12-24 hours before labor.
Signs of Dog Pregnancy
- Decreased activity and increased appetite
- Behavioral changes (may become more affectionate or more withdrawn)
- Enlarged, firmer nipples and darkened areolas
- Swollen abdomen (usually noticeable around day 40)
- Weight gain
- Clear vaginal discharge (in later stages)
- Nesting behavior close to delivery
Preparing for Puppy Birth
As your dog's due date approaches, you should prepare a whelping area with the following:
- A quiet, secluded space in your home
- A whelping box with low entrance and clean bedding
- Clean towels and warm water
- Emergency veterinary contact information
- Heating pad or heat lamp (for keeping newborn puppies warm)
Importance of Veterinary Care
Regular veterinary check-ups are crucial during your dog's pregnancy. Your vet can confirm the pregnancy, estimate litter size through palpation or ultrasound, and provide guidance for a healthy pregnancy. Always consult your vet if you notice any concerning symptoms such as:
- Prolonged labor (more than 2-4 hours between puppies)
- Green or black discharge before the first puppy is born
- Excessive bleeding
- Signs of distress or pain
- Fever or lethargy
Frequently Asked Questions
How accurate is the dog pregnancy calculator?
Our calculator provides estimates based on average gestation periods for different breed sizes. While the 63-day average is consistent for most dogs, individual variations can occur. For precise monitoring, regular veterinary check-ups are recommended.
How can I tell if my dog is pregnant without going to the vet?
While a veterinarian can confirm pregnancy through tests and examinations, some at-home signs include: decreased activity, increased appetite, behavioral changes, enlarged nipples, and eventually a swollen abdomen (usually visible after day 40). However, a veterinary visit is the only way to confirm pregnancy with certainty.
When should I start preparing for puppy birth?
It's best to start preparing around week 6-7 of pregnancy. This gives you enough time to set up a whelping area, gather necessary supplies, and make arrangements for the day of delivery. Having everything ready at least a week before the due date ensures you're prepared for early deliveries.
Do I need to change my dog's diet during pregnancy?
Yes, nutritional needs change during pregnancy. Around the 4-week mark, you should gradually transition to a high-quality puppy food or a special formula for pregnant/nursing dogs. These provide extra calories and nutrients needed for puppy development. Consult your veterinarian for specific dietary recommendations based on your dog's breed and health status.