In physics, escape velocity is the minimum speed needed for an object to break free from the gravitational attraction of a massive body. The escape velocity from earth is about 40,270 km/h (25,020 mph).
Staffordshire Bull Terriers. American Bully. The American Bully was recognized as a breed by the United Kennel Club (UKC) in the summer of 2013. It first appeared in the 1990s and was created by crossing American Pit Bull Terriers, American Staffordshire Terriers, and other breeds.
American bulldogs are occasionally called pit bulls, but they're distinct from the pit bull type. American staffordshire terriers, American pit bull terriers and Staffordshire bull terriers all come under the pit bull umbrella. Although the name pit bull refers to more than one breed, they all have the same origins. In fact, some breeders consider the American pit bull and the American Staffordshire terrier the same breed. The United Kennel Club registers American pit bulls whereas the American Kennel Club registers American Staffordshire terriers.