In this video, attorney Randy Sevenish answeres the question: Are some dogs more likely to attack than others? Yes, but any dog is more likely to attack if it is badly trained, not controlled or mistreated by its owners. About a quarter of all fatal bites for example are from dogs trained for dog fighting. However, dog bites can be particularly more dangerous with dogs that were bred as guard or attack dogs, such as pit bulls, German shepherds and others. Because of their breeding, size and strength, these dogs can also do more damage when and if they do attack. But any size dog of any breed can potentially cause serious and in some cases life-threatening injuries.hrase here.