The American Temperament Test Society which tests all breeds to get baseline averages for breeds released their numbers placing the pit bull above the general dog population. Pit bulls averaged 83.9% while the general dog population averaged 77%. The test which looks for aggression, avoidance, fear and panic is taken from a self selective population, meaning only those who are willing to pay the fee to have their dog tested will participate. However, the majority of people who will pay to test their dogs could fit into the good owner category indicating that the base natur