Any dog can bite and hurt--but he'd need bigger jaws than these to maul or kill. Besides, how many boxers and bull dogs cause real damage? From what I read and understand, they look tougher than they are. A Corgi is also a "bull dog"--interesting. Bred to manage herds of cattle. They have these jaws to fasten onto a bull's nose--not to shred to pieces the bodies of other dogs.