American Bulldog
The American Bulldog is larger in size. There are generally considered to be two types of American Bulldog, the Johnson type and the Scott type, named after the breeders who were influential in developing them, John D. Johnson and Allen Scott. These are more commonly known as Classic or Bully type and Standard or Performance type. The American Bulldog was first bred in the 1800s when the continental United States was first beginning to form.