The reason why pit bulls bite dogs when they see them is because pit bulls are naturally aggressive and like to fight, so if they see other dogs, they will easily fight and bite. Moreover, they are not afraid of pain and will not flinch. If you raise a pit bull, you must bring a leash when you go out. Try not to go to places with many people and dogs. If the pit bull wants to fight after seeing other dogs, take the dog away immediately to avoid accidents.