If you meet a mountain lion...: "Stay calm if you come upon a lion. Talk calmly yet firmly to it. Move slowly. Stop or back away slowly. Do not run. Raise you arms to appear larger. If the lion behaves aggressively, throw stones, branches, or whatever you can get your hands on. Without crouching down or turning your back. Fight back if a lion attacks you. Lions have been driven away by prey that fights back."
This is advice from the Colorado Divison of Wildlife. I like the "stay calm" part. And we humans, having now been disarmed by government, are now advised by government to throw stones or branches at a 150 predatory cat if it charges. What are we, a bunch of chimpanzees? Thanks for nothing.