Willis once fired at some bighorn sheep, on a steep mountain-side; he missed, and immediately after his shot, a cougar made a dash into the midst of the flying band, in hopes to secure a victim.
The cougar roams over long distances, and often changes its hunting ground, perhaps remaining in one place two or three months, until the game is exhausted, and then shifting to another.

When it does not lie in wait it usually spends most of the night, winter and summer, in prowling restlessly around the places where it thinks it may come across prey, and it will patiently follow an animal's trail.

There is no kind of game, save the full-grown grisly and buffalo, which it does not at times assail and master.

It readily snaps up grisly cubs or buffalo calves; and in at least one instance, I have know of it springing on, slaying, and eating a full-grown wolf.

I presume the latter was taken by surprise.