The Week-by-Week Pregnancy of a Dog

Dog pregnancy is a unique and special experience for pet owners. When planned and handled responsibly, it can be a rewarding journey. However, an unexpected pregnancy can present challenges, especially when there aren’t enough homes for all the puppies.

If you suspect your dog might be pregnant, this guide provides everything you need to know. Learn about the week-by-week development of a dog’s pregnancy, how to care for a pregnant dog, and the most common symptoms to watch for.

Remember, consulting a veterinarian is essential for confirming the pregnancy via an ultrasound. A vet can also provide specific advice tailored to your dog’s situation. Below, we break down the stages of dog pregnancy week by week—a must-read for any dog owner.

Symptoms of Pregnancy in Dogs

Wondering if your dog is pregnant? While not every mating results in conception, there are telltale signs that your dog may be expecting. Here's how to identify them:

• Swollen Belly: Around day 30, a veterinarian can confirm pregnancy through a physical palpation of the uterus.
• Changes in Nipples: The nipples may become larger and darker as the pregnancy progresses.
• Vaginal Discharge: Pregnant dogs often have white or clear vaginal discharge. If the discharge is bloody, green, or black, consult your vet immediately.
• Behavioral Changes: Pregnant dogs may become more affectionate or distant. They may also start "nesting," seeking quiet, sheltered spaces.
• Vomiting: Around day 35, dogs may experience morning sickness due to hormonal changes.
• Changes in Appetite: Some dogs may eat more, while others lose interest in food.

If you observe these symptoms, there’s a good chance your dog is pregnant. However, the only definitive confirmation comes from a veterinarian.

How to Confirm a Dog’s Pregnancy

Unlike humans, dogs don’t have at-home pregnancy tests. The following veterinary methods are used to confirm pregnancy:

1. Palpation: This cost-effective method can be performed around day 30, though it’s not always accurate.
2. Blood Test: Relaxin hormone levels can confirm pregnancy after 30-35 days of gestation.
3. X-Ray: Performed after 45 days, X-rays reveal the number of puppies and any potential abnormalities.
4. Ultrasound: The most common method, ultrasounds can confirm pregnancy as early as day 25 and monitor the puppies’ health.

How Long Is a Dog’s Pregnancy?

A typical dog pregnancy lasts about 65 days but can range from 58 to 70 days. Factors like litter size and the dog’s health can influence the timing of labor.

Week-by-Week Dog Pregnancy Guide

Weeks 1-2: Fertilization and Early Development

• Fertilized eggs begin to divide and travel to the uterus. No visible signs are present during this stage.

Week 3: Implantation

• The embryos implant in the uterine wall, and physical changes may start. Some dogs experience mild nausea.

Week 4: Detectable Changes

• Embryos are now 2-3 cm in size. Physical signs, such as a swollen belly and larger nipples, become noticeable.

Week 5: Rapid Development

• Puppies grow quickly, reaching 5 cm. This is the time to adjust the dog’s diet, introducing higher-calorie puppy food.

Week 6: Bone Formation

• The puppies’ bones begin to calcify. Their heartbeats may be detected via stethoscope, and their size exceeds 7 cm.

Week 7: Preparing for Birth

• Puppies reach their full size, and milk production begins. The dog may eat less as labor approaches.

Weeks 8-9: Labor Preparation

• The dog starts nesting and shows signs of impending labor, such as contractions, restlessness, and occasional vomiting. Keep emergency vet contact info handy.

Caring for a Pregnant Dog

Dietary Needs

• Continue regular feeding until week 5-6, then switch to puppy food to meet increased caloric needs.
• Offer smaller, more frequent meals during the final weeks to accommodate reduced stomach capacity.
• Keep fresh water available at all times.

Exercise and Hygiene

• Maintain light exercise routines until week 6. Reduce strenuous activities afterward.
• Bathe the dog during the late stages of pregnancy to ensure a clean environment for labor.

Veterinary Care

• Avoid unnecessary medications. Always consult your vet before administering treatments or supplements.