Pit Bull Terrier is usually a type rather than a single breed. The label covers the American Pit Bull Terrier, American Staffordshire Terrier, Staffordshire Bull Terrier, American Bullies and many mixes with broad heads and muscular builds. They trace back to nineteenth-century British bull-and-terrier dogs, and DNA tests show shelter labels are often wrong, so size and looks vary a lot.
Most are medium-sized, short-coated and athletic, from about 30 to 65 pounds, and many are affectionate and eager to please. Their strength means training and socialization matter, and some are choosy about other dogs. In Medina, a fenced yard or a visit to the dog park helps, but a dog's actual behavior should guide the match more than its label.