A Head for Heights. One of the most noticeable differences between these two breeds is that pit bulls are taller and heavier than Staffordshire bull terriers. American Kennel Club breed standards state that Staffies should stand between 14 and 16 inches tall at the shoulder and weigh between 24 and 38 pounds. United Kennel Club breed standards Staffordshire Bull Terrier Vs Pitbull Appearance. Staffordshire Bull Terriers are between 14 and 16 inches tall, and weigh between 24 and 38 pounds, making them small to medium-sized dogs. They have a muscular, stocky build and a short, smooth coat. Their ears are relatively high on the head and can be half-pricked or rose. AMERICAN STAFFORDSHIRE TERRIER or STAFFORDSHIRE BULL TERRIER!? Have you ever wondered what the difference between a Amstaff and a Staffy is? Well in todays v The American Staffordshire Terrier can do a minimum of one hour while the American Pitbull Terrier needs at least a minimum of two hours. The latter breed is a bit more active and takes on very high-energy roles like guarding and protecting which require athletic prowess. Am Staffs are partial to afternoon naps. The average male Pit bull weighs between 35 to 65 pounds, whereas the average male Boxer weighs between 65 to 80 pounds. Both breeds have similar thick and square-shaped bodies. Having said that, it makes it easier for owners to put on dog clothes or Cuban dog collars. Both have a deep barreled chest and a skinny waist. Children - Both breeds are child friendly, but the American Pit Bull Terrier is the most friendly between the breeds. Grooming - Both the Catahoula Leopard Dog and American Pit Bull Terrier are very low maintenance and easy to groom. Barking - Both the Catahoula Leopard Dog and American Pit Bull Terrier are above average barkers. The neck runs into a deep, thick, well-sprung chest. The American Pit Bull is a very muscular, stocky, yet agile dog that is extremely strong for his size.The tail tapers to a point. The ears are generally cropped, though this is optional. Docked tails are not accepted by the UKC or the ADBA. American Pit Bull Terrier: The original “pit bull” developed from crossing bulldogs with terriers, it is similar to the American Staffordshire Terrier but is smaller and more athletic. American Bully: Also called the Bully Pit, it is descended from a stocky strain of American Pit Bull Terrier crossed with Old English Bulldog, English T52wg0D.