On June 25th, 2002, "Sam", a 2-year-old male castrated American Cocker Spaniel presented to the Behavioral Service at the Cornell University Hospital for Animals (CUHA) because of his behavioral problem of aggression. According to the owners, this aggressive behavior was directed towards other animals in the household as well as towards people. In addition, the client claimed that Sam has been easily excitable, unresponsive to verbal commands and difficult to control physically. Sam actually has bitten a 5-year-old child on the face, fortunately only breaking the skin. In another occasion, he bit the client's brother on his leg, resulting in similar superficial injuries.