Was your dog in heat and happened to get away? Or maybe got a little friendly at the park? Has she been acting differently and you’re starting to get suspicious? Whatever it is that brought you here, knowing the early signs of dog pregnancy can give you time to give her the right care, diet, and mentally prepare yourself for puppies.
This guide walks through what to look for, week by week, how pregnancy differs from a false pregnancy, and when to see your vet.
How Long Is a Dog Pregnant?
Canine pregnancies usually last about 63 days from the first day of ovulation, or roughly nine weeks. If you start counting from the day of mating, it can vary by several days. Knowing the mating date, if you have it, makes everything else easier, because your vet can time tests and plan for the due date.
Early Signs of Pregnancy in Dogs, Week by Week
Every dog is different, and some show almost nothing until the second half of pregnancy. Here’s the general pattern.
Weeks 1–3
In the first few weeks, your dog will likely still appear normal. However, dogs can show early signs such as appetite changes, occasional vomiting, and some lethargy. Around day 21, you may notice that her nipples become slightly larger and pinker, and the surrounding fur may start to thin.
Because appetite changes, vomiting, and lethargy can also point to something other than pregnancy, it helps to know what else to watch for. This guide to early signs of illness in dogs explains common symptoms and behaviors that signal your dog isn’t feeling well, so you can tell normal hormonal shifts from a health problem worth a vet visit.
You can keep her normal food and exercise routines during this time, but avoid overly rough play, any new medications, and anything that could endanger her pregnancy.
Weeks 3–5
Around the fourth week, you may start to notice larger, darker nipples, a calmer sleepier personality, a slightly softer, rounder belly, and a larger appetite. You may want to book a vet’s appointment around this time to confirm whether it’s a real or false pregnancy.
Weeks 5–7
By the middle of pregnancy, you will start to notice a visibly larger tummy as the puppies start to grow. You will also notice larger mammary glands and behavioral shifts, such as clinginess, restlessness, or irritability.
If you’d like a more detailed timeline, this guide to signs of pregnancy in dogs from Responsible Pet Breeders covers each stage, from the first subtle changes through to late pregnancy.
Weeks 7–9
In the last few weeks, you may notice your dog starting to nest, meaning she will gather blankets, toys, and other soft things to make a den. She may also start to get restless, coupled with periods of long rests.
Could It Be a False Pregnancy?
A false pregnancy happens when a female dog’s hormones spike as though she were pregnant. Some dogs can develop swollen nipples, start nesting, have appetite changes, and show other signs of pregnancy. The only way to know for sure is to get her tested by a vet.
How to Confirm Your Dog Is Pregnant
The only way to truly confirm a pregnancy is to get your vet to test for these things:
- Hormone (relaxin) blood test, typically from around day 21–30 after mating.
- Abdominal ultrasound, usually from about day 25–35. It can also check that the puppies have heartbeats.
- X-ray, from around day 45 onward, is the most reliable way to count puppies before birth.
Final Thoughts
Having a pregnant dog can be both exciting and stressful. Make sure you watch for these signs of pregnancy, check for false pregnancies, and take the necessary tests to see for sure.
