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.
The current American Bulldog is a combination of the Scott type and Johnson type dog which has a shorter muzzle, but is a larger dog. In comparison to the Johnson and the Scott breeds, the American Bulldog has a much more massive build. Pit Bulls are not a specific breed. Many use the term pit bull to refer to the American Pit Bull Terrier, American Staffordshire Terrier, and Staffordshire Bull Terrier,or any dog with significant mixes of these breeds.