Is a bully a bandog   ? Noo!!!   The bully is history repeating it self. The English bull dog was once a great working dog with lack of a job and a growing dogfighting  and show world some were crossed to english white terriers and some were mutated in to extreamly overexagerations of a once great breed the bull and terrier branch  had great success and branched out in to all the bull and terrier breeds most succsessful proformance wish the american pit bull terrier    which is no branching off agine  there are the extream 35# terriers   mostly fighters and   and the bullys anouthere over exagerated  show breed  breed complete opisite of proformance.    There are some who believe some crosses were made to  speed up trait seperation  with  akc bulldogs  the  american (pit) bulldog is  a type of bandog breed mostly for proformance off the fighting pits and  a type of masstiff  bullys are more breed break down and stanndard incompetence   if by pure luck your dog has working traits it would be a bulldog .. if you did a f1 cross with masstiff it would be the start of a handicap bandog program    you might get lucky or wise  after that    but bullys are  honey bobo pits   good luck