Dog Pregnancy Ultrasound: When to Get One, What It Shows and What It Costs

A vet ultrasound can usually confirm dog pregnancy from about day 25 after breeding and pick up heartbeats soon after. For an accurate puppy count, an X-ray after about day 45 works better. Cost varies by clinic and region.

If you're planning a dog pregnancy ultrasound, the big questions are when to book it, what it will tell you and roughly what it'll cost. The timing is the part you can control, and it's easy to get wrong by a week. To count days from your breeding date, use our dog gestation calculator.

When can an ultrasound confirm dog pregnancy?

Most vets can see a pregnancy on ultrasound from about day 25 after breeding, and often see heartbeats by day 28–30. Scanning earlier than that is a coin toss: the embryos may be too small to see, and a "no" doesn't necessarily mean "not pregnant."

Counting day 1 as the breeding date can also be off by a few days, because dogs ovulate at different times. If your vet says "come back in a week," that's usually why. A repeat scan is common and normal.

What a 4-week ultrasound shows (and what it can't)

A scan around week 4 (roughly day 25–30) can show:

• Whether she's pregnant. Fluid-filled sacs in the uterus.
• Fetal heartbeats. These tell your vet the puppies are alive.
• Rough age of the pregnancy. Helpful when the breeding date isn't clear.
• Other problems. Signs of infection or a mass.

What it can't do well:

• Count puppies accurately. Puppies overlap and move, so counts are only estimates.
• Guarantee a healthy litter. A good scan is a good sign, not a promise.

Because a 4-week scan is early, a "not sure yet" isn't a failure. Ask your vet when to come back.

Ultrasound vs X-ray vs blood test (relaxin)

Each test answers a slightly different question:

Many vets use ultrasound early and an X-ray later, around day 45 or after, to count puppies and plan for whelping. Knowing the number matters: it tells you when labor is really finished.

If you're considering a home or blood test instead, see our guide to dog pregnancy tests.

Is an ultrasound safe for the puppies? Yes. Ultrasound uses sound waves, not radiation, and is widely used in dog pregnancy. X-rays use radiation, but the amount is low and vets take them late, once the puppies' bones are formed. Your vet will explain the timing.

How much a dog pregnancy ultrasound costs (factors, estimate tool)

Prices vary a lot, and I won't quote a number I can't back up. Here's what moves the price:

• Where you live. City clinics usually charge more than rural ones.
• Type of provider. A general vet, a reproduction specialist and a mobile ultrasound service all price differently.
• Exam fees. Some clinics include the office visit, and some charge it on top.
• Add-ons. Blood tests, X-rays or repeat scans.
• Extra scans. A second scan a week later adds another fee.

Two tips: ask for an itemized quote when you book, and ask whether a re-scan is discounted if the first one is inconclusive.

To budget for the whole pregnancy, try our vet cost estimator.

Booking the scan: count days from breeding (worked example)

Suppose your dog was bred on March 10. Count the breeding date as day 0, so day 25 means 25 days after breeding.

1. Day 25: March 10 + 25 days = April 4.
2. Best scan window (days 25–30): April 4 to April 9.
3. X-ray to count puppies (day 45): March 10 + 45 days = April 24.
4. Due date (day 63): March 10 + 63 days = May 12, with a window of May 7–17.

Book your ultrasound for the first days of that window, and ask your vet for a re-scan plan if the first one is inconclusive. If she was bred more than once, count from the first breeding for the earliest date, and let your vet guide you.

You can run your own dates through the dog gestation calculator. If you're not sure when she was fertile, the dog heat cycle calculator can help you estimate.

For the full timeline, see our guides to dog pregnancy length and dog pregnancy week by week, and our tips for caring for a pregnant dog.

What to expect at the appointment

Most dogs handle a scan calmly. Here's a typical visit:

1. Check-in and a quick exam. Your vet may ask about the breeding date, her last heat and any symptoms.
2. A little prep. Some clinics shave a small patch of belly fur and apply warm gel so the probe makes good contact. A few ask you to skip a meal or hold her urine, because a full bladder can make the picture easier to read. Ask when you book.
3. The scan. It takes about 10–20 minutes. She'll be lying on her back or side, and most dogs relax with a gentle hand and a treat.
4. The results. Your vet will tell you whether she's pregnant, whether they can see heartbeats and a rough age for the pregnancy. If it's too early to tell, they'll suggest a repeat scan.

Bring your breeding dates (every date, if she was bred more than once), any vaccine or deworming records and a list of her current food and medicines.

After the scan: next steps

If the answer is yes, ask your vet about feeding, exercise and a plan for day 45 and whelping. Our guide on caring for a pregnant dog covers food and setup week by week. If the scan is negative or unclear, ask whether it might be too early, and whether she could have a false pregnancy, where a dog shows signs without puppies. Don't assume either way without your vet's read.

When to call your vet

Beyond scan appointments, call your vet the same day if you see:

• Bloody, green, black or foul-smelling discharge during pregnancy.
• No appetite for more than 24–48 hours, vomiting or diarrhea.
• Fever, collapse, pale gums or extreme lethargy.
• Belly pain or a very hard, swollen belly.
• No labor by day 68 from breeding.
• Strong straining for 30 minutes with no puppy, at whelping.