Anybody that owns an American Pit Bull Terrier, which by the way is registered through the American Dog Breeders Association or the UKC, only Staffordshires are registered by AKC, that lets their dog run free even in their own yard are not,in my opinion, responsible owners. It is these owners that give the breed a bad name. I feel so bad for anyone who has ever been hurt by one of this misfortunately handled dogs and the owners of such should be prosecuted for it and the dogs removed from them and rehabilitated.
It is the responsibility of the owner of any breed to make sure that they are getting quality animals. The bloodline of the pups should be researched and questions should be answered satisfactorily before acquiring one. If you don't understand what you are getting....and are not willing to be responsible with the breed of choice.....you shouldn't even consider buying any dog.
Just my opinion.