Because of the location of where cougars live, they are at the top of the food chain and no other animal eats a cougar. Though a bear could probably take down a cougar, bears do not eat, kill, or even bother cougars.
Cougars eat what ever they can get their teeth in to. When Cougars are hungry you should better run for your life. but if you just stand there than you will be the cougars dinner or breakfast or even...