pegw wrote:
I am quite the dog lover, but as far as any dog that was bred for dog fighting, you have to know this: you can't untrain a dog that attacks other dogs. My girlfriend had a pit bull mix, and for the life of this dog she had to have it on a leash all the time outside. We were sitting for this dog and let her off the leash and she nearly killed a Yorkie. We paid the vet bill. Some of the pit bulls are not like this, but a lot of them are. Boxers can be this way, too.
Breeding for temperament is usually done by ethical breeders. You never know what you're getting from "backyard breeders" who don't properly socialize the puppies, get them vaccinated and vet checked before selling them and are only interested in the money.