Who are the puma's enemies?

Bears.

Black bears can chase off pumas, or pumas chase them off. When they fight to the death, black bear easily wins, being larger and more powerful.

Grizzly bears/and brown bears) almost always win because a puma runs away. Sometimes a puma will swat the bear, and jump away and keep doing it until the bear leaves, or the puma gives up. If they fight to the death the bear has no problem in killing the puma with one swat in the head.

Coyotes.

The 40 pound coyote is no match for the 200 pound puma, but sometimes a pack will drive one off, or sometimes the cougar will not leave or kill some of the coyotes.

Wolves.

A single wolf is killed by a puma but they have to fight and avoid getting hurt, though a cougar is no match for a pack or more than one wolf. They fight and bite each other and then the puma bites the wolfs neck which is the end of the wolf. Though some single wolves can kill a single male or female puma by fighting and biting, and then grabbing the cat by the throat killing it. Though a puma is about 90% more likely to win. Sometimes a puma will be driven away by a single wolf that only threatens by snarling and growling.

Humans.

They shoot pumas for fun, fur, livestock attacking, pet attacking, walking in their property, and attacking people.

Wolverines.

Wolverines can drive pumas from there kills by threatening the cat, though if they fought either one could win, though the cougar is more likely to win.

Eagles.

Killing an eagle is easy for a cougar, but sometimes the eagle will get the cougars face before it can do anything and kill it by ripping out it's eyes.

Even if there was a place where only cougars lived out of all predators, there still would be a lot of competition. They would be fighting and killing each other. When two male/female pumas fight, usually the younger one wins. A female puma is no match for a male unless she has babies.