I do think that there are some breeders who don't care about the dogs otherwise they would make sure that their breeding dogs have regular health checks to ensure that their puppies are healthy and don't carry some of the really serious and painful diseases like sm
What a very strange"introduction"of yourself & your dog I have a 2 year old Cavalier dog whose parents & G/parents are/were fully health tested-including normal MRI scans. The vast majority of "pet breeders"(breeders who breed from their unregistered pets9like the breeder of the pet cavalier bitch with SM in PDE), puppy farmers & BYB do no testing on their Cavaliers, because they falsely believe & claim only KC registered Cavaliers have health problems