staffordshire bull terrier

alert animal background beautiful biting black breed bull bullterrier canine carnivore close collar cute dangerous defense dog doggy domestic ears english eye face front guard guardian hair happy head isolated loyalty male mammal mouth natural nature nobody obedience obedient one outdoor outside pedigree pedigreed pet pit portrait pose puppy pureblooded purebred security sitting staff staffie staffordshire staffy strong sunny sweat terrier vertebrate young