They are themselves guilty, I mean people. Because the dog is a reflection of the man who cares about him. If a man knows what to do and how to work and in what way to work with that dog, whatever it is, then there is no problem. Since the American people are prone to violence, they directly affect their dogs with this attitude. Dogs become bloodthirsty, asocial as their bosses, i.e. people who guard them and take care of them. Dogs are like all animals and humans, social beings, rare are animals that live alone. People are posthumous, cursing, and others, maltreating people and animals, stealing, becoming increasingly selfish, killing, arguing, etc. all these dogs hear and suffer from people. The biggest problem is that dog owners do not know how to behave towards their dogs and other dogs. Many people around the world do not know how to approach a dog, and because of that, they are bruised and succumbed to wounds and, unfortunately, die or live their lives with great consequences from dogs. They need to first educate themselves and learn more about dogs, animals, raise awareness of animals and then they will not have problems with dog attacks or bites. I consider American Stafford terriers, pit bull, cane corso, and other big dogs very clever and very understand their leaders of the pack, ie. people who care about them ...