The Bull Terrier has a somewhat unclear origin. Most terrier historians will agree that the dog was created in the 19th century by crossing the Bulldog with the Old English Terrier. It may not be this clear cut, however. There is some evidence to suggest that the Borzoi and Collie were used to help elongate the head. However, many breed enthusiasts believe that the Dalmatian, the Spanish Pointer, Greyhound, and Foxhound were also part of the Bull Terrrier’s ancestory. 
While there is some disagreement on whether the breed was designed for fighting, there is ample evidence it was used in this way. There is also evidence that the breed was not entirely successful at this endeavor, and a dog of companionship was born.
The most well known feature of the Bull Terrier is the elongated head (which is often described as egg shaped). The ears are small and close together, and the forehead is generally flat between the ears. The eyes are well sunken and set near together. In show dogs the eyes should be as dark as possible. Blue eyes are considered a flaw and disqualified from the show arena. The Bull Terrier’s long, muscular neck tapers from the shoulders to the head. The body is well rounded and with strong, muscular shoulders. The Bull Terrier’s coat is short, flat and glossy. Adults usually stand between 21 and 22 inches and weigh between 50 and 60 pounds.
The Bull Terrier is an energetic and playful breed that requires a lot of attention. 
Proper training early on is imperative to avoid behavior problems. It is recommended that Bull Terriers are well socialized with people and other dogs as early as possible. While Bull Terriers do not generally excel at obedience training, patience and diligence will result in a well behaved dog. Bull Terriers do not respond well to aggressive training or play. Positive reinforcement is the key with this breed; lavish your Bull Terrier with praise and remain firm and consistent in your training efforts. Even well-trained, Bull Terriers are very strong animals and can become aggressive when provoked.
The Bull Terrier is a hardy breed and generally free from genetic disorders. As with all white dogs, be watchful of deafness in puppies. The short coat of the Bull Terrier requires little grooming.
