A friend living just outside Monroe, Wa, lived at the start of a several mile county maintained trail. He is an avid walker, started out one day when it was just about at freezing temp, very light snow falling. There were about 1 or 2 inches of snow on the trail, dense trees and brush either side of the trail.
He saw no other people along the way. Even though he was wearing appropriate apparel, he was sweating after a couple of miles and decided to go back home. After reversal of direction he went several yards, then at the end of a curve saw that his weren't the only tracks in the snow, a cougar had been stalking him from an early point on his hike.
At first came shock, then he realized it had been following him for the majority of the hike, then when the cat heard him coming back he leaped off the trail and into the woods. It was out there somewhere, likely close by and maybe watching. Then some panic, he had nothing but a small pocket knife with him so he broke off a stout branch from a tree, sharpened one end and started the trip home.
Kept turning circles repeatedly, even walking backward a lot of the time so he might see it, rather than just get hit by it. He kept shouting, yelling "Cougar, don't walk this way," as a warning to others that may hear him, and hopefully to ward off the cat.
Made it back home with no further sign of the cat, but a brand new awareness of the potential hazard that does exist for humans in the wilderness. And never again woodland hiking without his .357 revolver.
Patrick