If there is one animal that frightens me, it's a Grizzly.
Well, that and poisonous snakes (I have stepped over dozens of them and turned around to see them) because I know one of these days my luck is going to run out.
Those grizzlies in wooded areas as massive but they still can creep up and close at 40mph. I'd love to hunt them, but I'd be afraid to go to sleep in a tent because I know I'd wake up to being eaten, lol. I'd have to put a hammock like 15ft in a tree or something.