Several years ago I was glassing late afternoon for mule deer on a ridge I like too hunt. Around a dozen does and fawns along with 5-6 bucks got up around 5:00 to feed. I just sat there glassing from 500 yards away with the spotting scope, hoping to see a big buck get up.
I watched for quite a while, waiting for anything else to get out of their beds, maybe a big one. Suddenly, all the deer stared to the south of the ridge. I glassed that way and saw a lion slowly stalking them. Once it was 100 yards or so from the deer, it took off on a run at them. The deer scattered everywhere, and the lion got within just a few feet of catching one.
After the dust settled, I saw the lion go into a small patch of trees, but never came out. I had a tag in my pocket, so I tried calling it with my voice, using a deer distress sound. (I call many coyotes with that) Anyway, I never saw the lion again.
I will probably never see anything like that in my life again. That was pretty darn neet!