Being a breeder, I'm very careful on this subject. 1) I don't spay the females I am breeding, of course. People who do not intend to breed need to spay/neuter, period. If a female does not fit my very particular criteria (eye or patella problems, bad conformation, cord 1 PRA affected, etc) then she will be spayed. 2) A PP said that the world does not need anymore puppies. Again, I would be careful with this line of thought. What happens if there's no more puppies? Guess what! Canines will go extinct! I am all for breeding, of course, but only for those who know what they're doing. The problem with "pet overpopulation" (which, btw, I think is grossly exaggerated by HSUS and other organization - they pull numbers out of thin air!) is NOT good breeders - people who are testing their dogs, showing, breeding the right dogs together, etc. - but it lies with people who have "accidental" litters, who just want one puppy, who want their kids to see what it's like, etc.