Dog Pregnancy Signs, Timeline, and When to Worry: A Complete Guide

Dog pregnancy lasts about 63 days, or roughly 9 weeks, measured from ovulation. There is no reliable at-home pregnancy test for dogs. The earliest dependable confirmation is a veterinary ultrasound at 25 to 30 days after mating, and a relaxin blood test works from about 30 days. Cornell's Riney Canine Health Center and the American Kennel Club both recommend confirming with a vet rather than relying on signs alone.

- Days 1 to 14: No visible signs. Fertilization and implantation happen silently. - Days 14 to 21: Some dogs show mild appetite changes or slight nipple enlargement. - Days 21 to 28: Morning sickness is possible (mild vomiting, reduced appetite). Nipples become more prominent and pink. An ultrasound can confirm pregnancy from about day 25. - Days 28 to 35: Visible belly growth begins and appetite increases. This is when most owners first suspect pregnancy. - Days 35 to 49: Significant weight gain. The belly is noticeably larger, and a vet can feel the puppies on palpation. - Days 49 to 63: Nesting behavior and seeking quiet, enclosed spaces. Mammary glands fill with milk. About 24 hours before labor, the body temperature drops from the normal 101 to 102.5 F (38.3 to 39.2 C) to below 100 F (37.8 C), the single most reliable sign that whelping is near.

- First 4 weeks: Normal adult food at normal portions. Do not overfeed early, excess weight makes delivery harder. - Weeks 5 to 6: Increase food by about 25% and switch to a puppy or high-calorie diet, since pregnant dogs need the extra protein and calcium. - Weeks 7 to 9: Increase food by up to 50%. Feed 3 to 4 smaller meals instead of 2 large ones, because the growing puppies compress the stomach. - Always provide fresh water. Dehydration during pregnancy is dangerous.

The MSD Veterinary Manual and AKC flag these as emergencies. Call a vet right away for: - Green or black vaginal discharge before any puppy is born - More than 2 hours of strong contractions with no puppy delivered - More than 4 hours between puppies - Extreme lethargy or collapse - Bloody discharge that does not stop - A fever above 103 F (39.5 C) during pregnancy - Vomiting or diarrhea lasting more than 24 hours - Pregnancy lasting more than 65 days with no sign of labor

Set up a whelping box 7 to 10 days before the due date. Use a large cardboard box or plastic container lined with clean towels, placed in a quiet, warm corner away from household traffic so the mother feels safe. Keep the room around 85 to 90 F (29 to 32 C) for the first week after birth, because newborn puppies cannot regulate their own body temperature.

Most dogs deliver without human help, but stay nearby and watch. - Each puppy arrives in an amniotic sac. The mother should tear it open and lick the puppy to stimulate breathing. - If she does not tear the sac within 30 seconds, gently open it yourself. - The mother usually chews the umbilical cord. If not, tie it with clean thread about 1 inch (2 cm) from the puppy's body and cut with sterile scissors. - Count the placentas. There should be one per puppy, a retained placenta can cause infection.

The mother will be exhausted and hungry. Offer warm food and water. Watch for signs of infection: fever, foul-smelling discharge, refusal to eat, or neglecting the puppies. Mastitis (infected mammary glands) is common, so check for hot, hard, painful nipples.

Many pregnancies are unplanned. If you are caring for a pregnant stray, the same principles apply: provide good nutrition, a safe delivery space, and watch for the complications above. Once the puppies are weaned at 6 to 8 weeks, spaying the mother prevents future litters and lowers her risk of mammary cancer and uterine infection.

Log the mating date, track symptoms week by week, and set reminders for vet check-ups and dietary changes. When delivery day approaches, Omelo can help you judge whether a symptom is normal or needs urgent attention, especially at 2 AM when the clinic is closed.