Though they are not ideal for a first-time dog owner, because of their power and difficulty to train, their physical strength is matched by their intelligence, which makes them thoroughly reliable pets.
Both body and mind need to be kept active and they can be fun and playful. They are typically very affectionate dogs that love human company. Bull Terriers are particularly good with children, and usually have a high pain threshold, which reduces the risk of injury from a defensive bite.
Younger dogs, however, may regard children as playmates and because of their strength could cause inadvertent injury. They are protective of children in their charge, and the females are especially noted for this. Bull Terriers make formidable guard dogs while their owners are away as they are fearless.
The American Temperament Test Society, Inc. (ATTS), a not-for-profit organization that promotes uniform temperament testing for dog breeds, gives the Bull Terrier a pass rate of 92.1% as of 2008. The average for all breeds is 81.5%.