apbt and a working terrier completely different animals , one is surrounded by men , held back or egged on , rested treated, in a safe environment, could even have the towel thrown in for it , Brains not needed ...the other is on it's own pure drive, in the dark lack of air , tight even the hard earth can take its toll on their body , although help is on it's way it could take hours , no little ring to walk across more like a 3D puzzle with its prize on the move ,it may be facing something way out of its weight range more aggressive more suited to that environment ....there is only one game do