Tiger Attack Mystery

Who was responsible for the anthrax attacks in 2001? What happened to Saddam's weapons of mass destruction? These unsolved mysteries have officially been joined by another: Why did Siegfried and Roy's white tiger, Montecore, attack Roy on stage in October 2003? AP has uncovered an Agriculture Department report showing that agency investigators conducted an extensive inquiry, but never did figure out what caused the tiger to sink its teeth into Roy's neck and drag him offstage.