Pit Bull Terrier is more a type than a single breed. In US shelters the label usually covers American Pit Bull Terriers, American Staffordshire Terriers, Staffordshire Bull Terriers, American Bullies and mixes with broad heads and muscular builds, all descended from nineteenth-century British bull-and-terrier dogs. DNA tests often contradict shelter labels, so a dog's behavior tells you more than its name.
Most weigh 30 to 65 pounds and have a short, smooth coat that sheds moderately and needs little more than regular brushing. Many are affectionate and eager to please, but they're strong, so training and calm introductions matter. Some are selective with other dogs, which is worth weighing if busy sidewalks and dog parks are part of your routine. Adopters often have many adult dogs to choose from, with personalities already showing.