If you've ever needed a reminded as to why you should always keep at least 100 yards between yourself and either a grizzly bear or a moose, this is it.
How would you react if you were out for a relaxing hike then realize that you're being stalked by a mountain lion. For one hiker, this was a very real and intense situation.
When you're in the back country of the American west, sometimes you get to see nature enact the food chain right in front of you. That just happened as a hiker had a close encounter with a grizzly that was chasing mountain goats.