How Long Is a Labrador Retriever Pregnant?
A Labrador Retriever is typically pregnant for about 63 days, or roughly nine weeks, from the time of conception. However, the gestation period can range between 58 to 68 days, depending on factors like individual health, age, and whether it’s the dog’s first litter.
Labrador Pregnancy Timeline
Knowing how long a Labrador is pregnant helps prepare for every stage of the journey—from breeding to birth. Just like humans, dogs go through defined pregnancy stages, and understanding each can be incredibly helpful for owners and breeders alike.
Week 1–2: Fertilization and Early Changes
Fertilization usually happens within a day or two after mating. Although there are no visible signs yet, changes are already occurring at the cellular level. Embryos begin their journey to the uterus, where they’ll implant and start developing.
🐾 Tip: Avoid giving medications or vaccines during this period unless prescribed by a vet.
Week 3–4: Implantation and First Signs
Around day 21, embryos implant in the uterine lining. Some Labradors may show signs like:
Slight decrease in appetite
Mild lethargy
Clear vaginal discharge
This is often the first time an attentive owner might suspect pregnancy.
For early confirmation, a veterinarian may perform an ultrasound or hormone test. These diagnostic methods are supported by experts at the Cornell University College of Veterinary Medicine, who emphasize their reliability in detecting canine pregnancy.
Weeks 5–6: Visible Changes and Increased Nutritional Needs
By week 5, the pregnancy is halfway through, and signs become more noticeable:
Increased appetite
Slight weight gain
Enlarging abdomen
More affectionate or clingy behavior
This is a critical time to switch to a high-quality puppy food, as it provides extra calories and nutrients for both the mother and growing puppies.
Weeks 7–8: Nesting Behavior and Final Growth Stage
During this stage, puppies grow rapidly. The mother dog might begin “nesting”—looking for quiet, safe places to give birth. She may also show:
Reduced appetite
Visible puppy movement in the belly
Behavioral shifts (restlessness, nesting, etc.)
It’s time to prepare a whelping box and limit physical activity to short, gentle walks.
Week 9: Labor Preparation and Delivery
By the 63rd day, most Labradors go into labor. However, some may deliver a few days early or late, especially if this isn’t their first litter. Signs of impending labor include:
Drop in body temperature (below 99°F)
Restlessness and panting
Digging or nesting
Refusal to eat
Once contractions begin, the first puppy usually arrives within 1–2 hours.
⚠️ Call your vet if labor lasts more than 24 hours, or if over 2 hours pass between puppies.
What to Expect After Birth?
After delivery, the mother cleans and nurses her pups. The full litter may range from 6 to 10 puppies, with first-time mothers often having fewer.
🐾 Puppies should stay with the mother for at least 8 weeks before rehoming.
Proper care during and after pregnancy ensures healthy development for the puppies and quick recovery for the mother.
Frequently Asked Question(s)
Can a vet tell if my Lab is pregnant without ultrasound?
Yes, a vet can detect pregnancy through palpation (feeling the abdomen) between days 28–35 or via blood tests that detect relaxin hormones. Ultrasound is the most reliable method.
How can I care for a pregnant Labrador at home?
Provide balanced nutrition (switch to puppy food in week 5)
Limit strenuous activity
Create a calm environment
Monitor for changes in behavior or health
Do Labrador pregnancies differ from other dog breeds?
The timeline is roughly the same, but Labs—being a medium-to-large breed—may carry larger litters, and their nutritional needs are higher.