At my dad's club years ago there was a large mature buck that was almost black. He was very big, nice rack and even moved around slow for a deer. Everyone that seen it while hunting had odd things to happen to where they couldn't kill it. Several missed shots, some at close range. One day my dad finally had a 75yd broadside shot at him. He squeezed off. Miss fire! While my dad was in a state of confusion the buck slowly walked away. Nobody at the club ever killed that deer and the opportunities to do so we're surprising. They named him the ghost buck.