Book excerpt: This book discusses the evolution of social behavior in canidae, such as wolves and dogs. From the book: "Saying that a dog is a fear-biter, is equivalent to saying that the dog does not behave purposefully. By saying that the dog shows submissive-aggression we simultaneously answer the question of how to solve the problem. The dog is submissive, which means reacting to a threat by another, giving in, and surrendering. It only becomes aggressive because its behavior does not have the desired effect. The dog is then under threat and ready to react by flight or immobility. If flight is not possible, it may freeze. Some do and die. Others resort to their last defense, they attack, and then the drive of aggression takes over. This situation is easily avoided by accepting the dog's submission or allowing it to flee."