I've had both done and I think the ultra sound is not stressful for them at all. I was in the room and held her and he ran it over her belly. With an xray you wouldn't see them moving anyways, but an ultra sound you see them move and see the hearts beat. The xray is more accurate to determine how many pups there are, the ultra sound isn't. If I was concerned I'd ask them to do it or call around to other vets who do it. |