Dog Pregnancy Week by Week: Complete Gestation Timeline
Dog pregnancy lasts about 63 days. Follow the full week-by-week gestation timeline — from conception to labor — with what happens and what to do at every stage.
Think your dog might be pregnant — or just confirmed it? This week-by-week dog pregnancy guide walks you through the full canine gestation timeline, from conception to labour. You'll know what's happening inside, what you'll see on the outside, and exactly what to do at every stage.
Quick Answer
- • Dog pregnancy lasts about 63 days (range 58–68).
- • That's roughly 9 weeks, split into 3 trimesters.
- • First clear signs appear around week 3–4.
- • A temperature drop below 100°F means labour is ~24 hours away.
Find your dog's due date
Enter the breeding date and get an instant due date plus the current stage of pregnancy.
Open Dog Pregnancy CalculatorThe 3 Trimesters at a Glance
A dog's ~63-day pregnancy is divided into three roughly 21-day trimesters. Most of the visible action happens in the second and third:
1st Trimester (Days 1–21)
Fertilisation and implantation. Almost no outward signs.
2nd Trimester (Days 22–42)
Pregnancy is confirmable. Belly grows, appetite rises, weight gain begins.
3rd Trimester (Days 43–63)
Puppies finish developing. Nesting begins and labour approaches.
Dog Pregnancy Week by Week (Full Timeline)
Here is the complete week-by-week breakdown of canine gestation — what happens inside, and what you should do:
| Week | Days | Trimester | What Happens | What To Do |
|---|---|---|---|---|
| Week 1 | Days 1–7 | 1st | Fertilisation. Eggs are fertilised and begin dividing. No visible signs. | Feed normal adult diet. Avoid stress and rough play. |
| Week 2 | Days 8–14 | 1st | Embryos travel down to the uterus. Still no outward signs. | Keep routine normal. Continue regular feeding. |
| Week 3 | Days 15–21 | 1st | Embryos implant in the uterine wall (~day 16–18). Subtle behaviour changes. | Gentle exercise only. Some dogs get slightly clingy or quiet. |
| Week 4 | Days 22–28 | 1st | Vet can confirm by ultrasound (~day 25–28). Possible 'morning sickness', clear discharge, nipple changes. | Book the ultrasound. Offer small, frequent meals if nauseous. |
| Week 5 | Days 29–35 | 2nd | Puppies develop rapidly and gain definition. Mum starts gaining weight. | Begin increasing food gradually. Switch toward puppy/growth food. |
| Week 6 | Days 36–42 | 2nd | Belly visibly enlarges. Nipples darken and enlarge. Appetite climbs. | Feed more calorie-dense meals, split into 3–4 smaller portions. |
| Week 7 | Days 43–49 | 3rd | Puppy skeletons calcify and show on X-ray (~day 45). Belly hair may shed. | Get an X-ray to count puppies. Prepare the whelping box. |
| Week 8 | Days 50–56 | 3rd | Puppy movement is visible. Milk may appear. Mum slows down. | Set up a quiet whelping area. Introduce her to it now. |
| Week 9 | Days 57–65 | 3rd | Nesting and restlessness. Temperature drops below 100°F ~24h before labour. | Take temperature twice daily. Have vet's number ready. Birth is near. |
Timings are measured from conception and are approximate. Always confirm stages with your veterinarian.
Feeding a Pregnant Dog
For the first 4–5 weeks, feed her normal adult diet. From week 5 onward, her energy needs climb steadily — by the final week a pregnant dog may need 30–50% more food than usual, ideally a high-quality puppy/growth formula for the extra protein and calcium.
Because the puppies crowd her stomach late in pregnancy, switch to several small meals a day rather than one or two large ones. For exact portions, see our dog feeding guide or run the numbers in the Dog Food Calorie Calculator.
Signs Labour Is Near
In the last few days, watch for these signals that puppies are coming:
- • Temperature drop below 100°F (37.8°C) — birth usually within 24 hours.
- • Nesting — digging at bedding, seeking a quiet spot.
- • Restlessness & panting, pacing, and refusing food.
- • Clear or milky discharge and visible contractions.
Start taking her temperature twice a day from around day 58 so you don't miss the drop. Not sure of her exact day? The Dog Pregnancy Calculator gives you the due-date window from the breeding date.
Call your vet immediately if you see green or black discharge before the first puppy is born, if she strains hard for more than 30–60 minutes with no puppy, or if she goes past day 68 without labour. These can signal complications that need urgent care.
The Bottom Line
Dog pregnancy is short — about 63 days — but a lot happens fast. Confirm with an ultrasound around week 4, increase food from week 5, get an X-ray after day 45 to count puppies, and set up the whelping box by week 8. Track her exact stage and due date with our Dog Pregnancy Calculator, and you'll be ready to welcome a healthy litter. 🐾
Frequently Asked Questions
How long is a dog pregnant?
Dog pregnancy (gestation) lasts about 63 days from ovulation — roughly 9 weeks. The normal range is 58 to 68 days. Because the exact day of conception is hard to pin down, vets often time pregnancy from the breeding date, which can vary by a few days.
How can I tell how far along my dog is?
The most accurate way is a vet visit. An ultrasound from around day 25-28 confirms pregnancy and gives a rough stage, while an X-ray after day 45 counts the puppies and shows how developed their skeletons are. If you know the breeding date, our Dog Pregnancy Calculator estimates the stage and due date instantly.
When do signs of dog pregnancy first appear?
Most visible signs start around weeks 3-4 (days 21-28): a slightly enlarged or pink-tinged belly, mild appetite changes, lower energy, and sometimes brief 'morning sickness.' Before that, an early pregnancy is hard to detect without a vet. Clear physical changes like a swollen abdomen usually appear from week 5 onward.
How do I know when my dog is about to give birth?
The clearest signal is a temperature drop. A dog's normal temperature is about 101-102.5°F (38.3-39.2°C). In the 12-24 hours before labour it falls below 100°F (37.8°C). Other signs include nesting, restlessness, refusing food, and panting. Once contractions begin, puppies usually arrive within a few hours.
How many puppies will my dog have?
Litter size depends mostly on breed and size. Small breeds often have 1-4 puppies, medium breeds 4-6, and large or giant breeds 6-10 or more. An X-ray after day 45 is the only reliable way to count puppies before birth, which also helps you know when the litter is complete.
When should I take my pregnant dog to the vet?
Book a confirmation visit around 3-4 weeks (day 21-30) for an ultrasound. Schedule an X-ray after day 45 to count puppies. Throughout pregnancy, contact your vet promptly if you see green/black discharge before any puppy is born, prolonged straining with no puppy, extreme lethargy, or a missed due date beyond day 68.