Bears are too large for cougars (mountain lions), but a mother cougar may take on a bear if her young are in danger.
Lions can't kill bears because they are never in contact. There are no places where both lions and bears live together in the wild.
bears or lions
Humans, primarily. Bears and wolves may also attack cougars, but never to hunt and kill them.
Not normally. Bears can kill cougars, but cannot catch them in flight. Cougars are much faster.
Humans are the top "predator" of a cow. Other animals that can kill cattle are cougars, black bears, grizzly bears, lions, tigers, wolves, bacteria, viruses, etc.
Black bears, grizzly bears and wolf packs will occasionally attack and kill cougars.
Bears and wolves are known to kill cougars. Large alligators may eat cougars.
The biggest predator a mustang has are cougars
Cougars, mountain lions, tigers ect
Bears, Tigers, Eagles, Falcons, Lions, Cougars
Humans, primarily. Other predators include cougars, lions, tigers, wolves, and bears.
Wolves, Grizzly and Black Bears, Cougars, Coyotes, lions, tigers, vultures, etc.
Humans, cougars/mountain lions, black bears, wolves, coyotes, etc.