Eastern Pennsylvania. Baker Street specializes in Bull Terrier breeding for health and temperament. If you are looking for Bull Terrier puppies, you have found a reputable breeder. Our puppies are hand raised in our home, heavily socialized & nurtured. We are producing dogs who excel in the breed ring as well as in agility & obedience. Our Bull Terriers make great family companions and live long healthy lives. Puppies and adolescents are sometimes available.