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.
However a few jurisdictions, such as Singapore and Franklin County, Ohio, also classify the modern American Bulldog as a pit bull-type dog. In the United Kingdom, a pit bull is an American Pit Bull Terrier. Courts in the United States and Canada have ruled that expert identification, when using published breed standards, is sufficient for the enforcement of breed-specific legislation.