The female should be at least 5 lbs., and healthy (as stated by the other posters). By the way, larger is better. The reason for this is that she must be large enough to carry - and deliver - the pups. If she's too small, the puppies may need delivery via C-section, and if it isn't done on a timely basis, you could lose Mom and babes.
The stud *should* be smaller (and healthy). If he's larger, the chances are the puppies will be, too ... and that increases delivery risks.
"Healthy" is not just up-to-date on shots (although that's part of it); it also means that they don't have any congenital problems (portal shunt liver disease and luxating patellas come to mind). It's not fair to either the puppies or their new owners to breed dogs that have a good chance of having problems.
Welcome to Yorkie Talk! Take your time and read the info in the different forums, including the breeders' forum. There is a LOT of information to be gathered here. |