It is all about the ability of the vet doing the Ultra Sound. We used to live in another state, and our vet could, based on the Ultra Sound at day 31 after the last breeding tell us which breeding the mother took. This was based on measurements of the puppies and certain development characteristics he could see on his screen. He was also normally very close to the day she would welp. A few times he missed on the number of puppies, but not very often.
After moving to the state we live in now, we found it was a waste of money because the vets we tried charged a lot of money for the Ultra Sound, and really couldn't give us much worthwhile information. We now depend on an x-ray instead. |