Another thing that really bothers me is the ones that breed 2 cats or dogs together knowing there is a genetic problem but they try anyway hoping that at least a few 'good' ones come out in the litter to sell. That is just wrong.
My daughter met someone that was trying to make a 'new' breed with cats. One was a Rag-doll, the other a Norwegian something..anyways, there is a chance that the babies could come out blind in one eye from one of the parents, but they still take the chance to breed them hoping to sell the kittens that come out OK. That is wrong, wrong, wrong!