04/09/2026
🐶 When can you ultrasound a pregnant dog?
* Around 25–30 days after mating: pregnancy can usually be detected reliably.
* Around 30–35 days: the pregnancy is easier to see, and the vet can assess fetal development and heartbeats.
* Later in pregnancy: ultrasound can check viability, but X-ray after about 45 days is generally better for counting the number of puppies because their skeletons are visible.