close-up of dog's head. one blue american staffordshire terrier.

39aph39 active american amstaff animal beautiful blue breed bull bulldog canine car close-up closeup companion cute day dog doggy domestic friendness fun funny happy head large mammal mouth muscular one outdoors pedigree people pet pit pitbull portrait puppy purebred relax relaxation s stafford staffordshire sunlight sunny switzerland terrier toy vertebrate white young