The black bear would win this fight. A black bear has more muscles and a bad aggression with sharper claws and teeth.
Probably the black bear.
The black bear would win.
That would depend on the species of bear. For instance, a lion could more than likely defeat a black bear, but a grizzly bear would be a far more dangerous opponent.
The giant black bear would win, but it would be injured.
A bear is stronger but a wolf has better attack skills so it depends. A bear could be weak and the wolf could win. It could also be the other way around so either way is possible. No wolf on the planet could defeat a healthy brown or black bear in a fight, one on one. Only a pack of wolves could win.
Polar bear, they are known as the most carnivorous bear.
It depends on who is bigger. If the black bear happened to kill the lion, the black bear would get badly injured.
It's likely that the polar bear might win the fight. 2 black bears would first go for the grizzly bear and work together to swat that thing to death, but a grizzly bear would also fight back. If the grizzly bear did this, it might have a chance to win, but it could get seriously hurt. Then, the polar bear could kill the injure grizzly bear by biting that thing on the throat.
Black bears dominate over cougars. A grizzly bear would destroy a cougar.
The black bear would win because it is heavier and can stand up.
The Brown bear is way bigger then the black bear. The brown bear is also more aggressive.