Several years ago I was on a moose hunt in a part of Region 5 crawling with black bears. At least it was for the first week we were there then they disappeared.
We met this family when they had their truck stopped in the middle of the road and there was a girl standing there with a rifle and the dad was standing on the bank looking down and saying "Nope, you missed. there's no blood and no hair." They didn't make an effort to look any farther.
One day we were driving along and spotted a black bear at the edge of the road about 90 to 100 yards away. My buddy shot at it and it wheeled and dove for the bush. I'd seen it hunch up on the shot so was certain he'd hit it, but when we got to the spot where we thought the bear was, Gone. No sign. No blood, no cut hair and not even a scuff mark on the ground. We shoved our way through the tangle of second growth and looked downhill where we estimated the bear might have gone and voila, 20 yards down the hill was the dead bear.
To this day I wonder how many "missed" bears ran off and died from that hunt.