I had a friend years ago when i lived in MS. that shot a big eight pointer from his tree stand with a bow. The deer was facing directly toward him. We followed a good blood trail that quickly got to no more than a few drops here and there and we were never able to find the deer. Later that same year he was hunting from the same stand durring gun season and shot a big eight pointer. When he dressed the deer out,,he found his complete arrow long ways inside the deer.He says he saw no indication that anything was wrong with the deer when it walked out before he killed it. Another time i shot a young buck during gun season that was running with several other deer. when i went to drag it out i saw that it was missing a front leg.It was completly gone from the shoulder down and had happened more than likey the year before because it was healed up, even hair growing back over where it had been cut off. It looked to be running normal and was keeping up with the other deer it was running with. Nature has ammazing ways for sure.