I'm gonna have to disagree. I've dealt plenty of "bully" dogs grown to be very docile and gentle pets. Thier size/strength is something to consider in terms of handling dogs, but thier potential aggressive behavior can be offset with proper training. A good example is a personal friend who's family purchased a pitbull at a very young age. He's completely non-aggressive after proper house training. He's playful, but never bites and locks down with his jaws. Of course this doesn't mean ALL bully dogs will be gentle. But the younger they are, the easier it is to teach them proper behavior around other people/animals.