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.
Pit bull is a type of dog, but the American pit bull terrier is a breed. Other breeds that fall under the term pit bull include the American Staffordshire terrier, the American bulldog, and the Staffordshire bull terrier. All of these breeds derive from the dogs originally bred to fight in the pits in England.