American Staffordshire Terrier


Both the American Staffordshire Terrier (AmStaff) and the Staffordshire Bull Terrier descended from the Bulldog and a game Terrier breed. The powerful AmStaff was used in the illegal sport of dog fighting in England in the 1800s. Although sweet and docile, improper handling and training by people for fighting has left the AmStaff with a less than favorable reputation. Because of its intelligence and build, the AmStaff excels at obedience, agility, tracking, and conformation.


Medium; females 17 to 18 inches, males 18 to 19 inches; 40 to 75 pounds.


Almost any solid, particolored, or brindled.


Playful, affectionate, and friendly, but protective of family; can be aggressive with other dogs. Stubborn and prone to destructive behaviors if not properly exercised.

Energy level:

Medium to high.

Best owner:

Active owner with previous training experience.


Daily exercise, leash, secure fences, bonding and socialization, a job, early training, minimal grooming

Life expectancy:

10 to 12 years.