Salvatore “The Bull” Gravano "I was the underboss of the Gambino Organized Crime Family," said salvatore Gravano when he took the witness stand at the trial of his Mafia boss, John Gotti. "John was the boss; I was the underboss. John barked and I bit." For pointing a finger at Gotti and the murder's committed by the other mobsters from the witness stand, Gravano earned his freedom last year after serving less than five years in prison. His latest testimony came March fourth and March fifth nineteen ninety six at a mental competency hearing for Genovese family crime boss Vincent (The Chin) Gigante. Gravano says he