No they do but a reputable breeder is supposed to check their dogs, the parents and grandparents for all those things and then breed if they don't have any of those and are healthy so its less likely that their pups will get it. However it does happen even if the parents are healthy, they can get it from one of their great grandparents or something like that. Dogs from puppymills are more likely to be sick because usually the people that run them don't check their dogs for any diseases and just breed breed breed for the money. And they also don't check the pups or take them to the vet cause they don't want to use money out of their own pockets. |