do you mean bulldog =apbt or a abd , either a gsd will had some guarding instinct to it , a pits norm friendly with people . Mind you my 1x gsd x grey Buck , he full on to his quarry , if he was the same to a person , he would deff wreak them, you got 85lb muscle and bone with powerful jaw clamping down on you .But he bloody strange dog he loves all people and good with other dogs, he must have picked up the greys temp, as he very sensitive and wimpy he like old Bryn both get up set easy, there nothing like my old bullxs they were chilled around the yard , and not sensitive lik