While ridge walking on my way to a 14'er (Gray's)I was approached by a goat. It stood up from lying on the grass. It wasn't moving quickly but had its head down and got within about 15' of me. My initial reaction was that it wanted its ears scratched but I reconsidered and bravely ran away.
("run" being only a concept of brisk departure at 13,000')
Fortunately the footing was tundra and even though it was steep I could open the distance effectively. He could have killed me with just a nudge to get me off balance and tumbling.

I've always wondered about that encounter and whether it was dangerous or not. I guess I know now.