"Humans are at the top of the food chain, at least some of them. I count myself as one of them"
Well, after us, Cougars come first...
Humans are at the top because their brains have allowed them to make weapons, traps and so forth, but if a human is face to face with a large, fast, strong carnivore such as a cougar and the human doesn't have a weapon on hand, I think the human doesn't have much of a chance.