From a psychological defense mechanism of the level to which they would normally consider normal is not necessarily true that some usually very sweet and shy, honest people do not seem to mean that no aggressive behavior and anger, but was removed. But hidden in the heart of violence, even in a stimulating environment and opportunities are fully released emotions, violent behavior is uncontrollable.
due to psychological stress, social work and other emotional factors, many people would not be a good solution that moves another target may be an object or an animal, put all of dissatisfaction excited about animals and felt very relaxed, happy, excited.
