Does a pup have to pass any health or conformation test to receive its KC papers?
From what I gather, a KC registration only tells you that the parents are KC registered. It's a pointless bit of paper. So I don't "get" the distinction between "KC" breeders and "backyard" breeders - they can be the same person.
Compare to e.g. the ISDS where an eye test is part of the registration
http://www.isds.org.uk/society/dog_registration/guide.htmlI've no idea if other breed societies have their own registrations.
I tend to think in terms of:
"money" breeders - any dog, any bitch, KC papers look good in the classifieds
"working" breeders - have a good working spaniel, collie, terrier etc, breed for themselves, to replace dogs, for friends/acquaintances
"pedigree" breeders - breeding to pedigrees, possibly for showing, to get good examples of the breed etc.
The latter two categories would hopefully cover their own costs in breeding but it's not done for profit.