This war veteran’s puppy may have been only six months old at the time, but she certainly knew what needed to be done when her owner was in danger. Dave Sharpe, of Arlington, Virginia, was suffering with severe post-traumatic stress disorder when he decided to put a pistol in his mouth and commit suicide. But his pit bull Cheyenne saw him crying with the gun in his mouth and licked his ear, convincing Mr Sharpe he had something to live for.