For cubs, people and older bears, if the older bears are starving. For females, people. For males, other males and people. All bears main predators are people, especially people with big cars and guns.
Man hunts bear.
The black bear's only predators are humans.
The main predators of the polar bear are people.
man
brown bear or tiger are predators
Adult black bears do not have any predators.
Bear
A wolf and a bear.
the LA Black Bear, like all bears is an apex predator, and has no natural predators aside from humans.
cougar,wolf and bear
People.
obviously the predators are man and maybe a drunken bear or something
It bites and claws at predators.