I watched a buck (small 4 pnt.) last year. He came running off the ridge straight at me, and held up in some brush I could look down into. When he was running, he had only one rip in his velvet on the right side. When he stopped in the brush he watched his back trail for about 15 minutes, and then took out his energy/anger/frustration/ whatever he was feeling on the brush and ground. It was only about 15 to 20 minutes and he was walking out of there with completely clean off and already mostly white antlers. I was amazed!