Humans, primarily. Bears and wolves may also attack cougars, but never to hunt and kill them.
the enemies of the mountain zebra is lions and hyenas
humans
Wolves, bears, humans, and mountain lions.
The andean condor's enemies include jaguars, mountain lions, boa constrictors, caimans, and crocodiles.
A wild horses's enemies are wolves & mountain lions.
The enemies of white-tailed deer are wolves, coyotes, feral dogs, mountain lions, and humans.
In South America, large black caimans are believed to prey on mountain lions in water. In North America, wolves, black bears, and grizzly bears will steal kills from mountain lions.
Mountain Lions, Eagles, More like big fat birds.
Mountain lions have few enemies except man. Catamount is another name for the puma, or cougar, panther, mountain lion.
People are the biggest thing. Wolves, Bears, and sometimes mountain lions will kill a moose.
Jaguars, mountain lions, tree pythons, and harpy eagles all eat sloths.
Other than man, cougars, wolf packs, mountain lions and the like.