they are origioanally fighting dogs their jaw structure is square shaped at the front so when it grips it will not let go the breed to make them is over 13 dogs to get them were they are today,not 1 dogo has been reported to have attacked any one they banned them just because of their instinct to kill its 100% wrong!! if thats their case they should ban rotweilers,dobermen,alsation ect they have all attacked and killed people but they are still around today,i own a doberman hes lovely just very protective gets on great with the dogo when they pass each other but ny dog in rong hands is dangero