In minecraft black bear would behave smilary to foxes,polarbears,pandas,and wolves
They could be tameable with new blue berries that same as them would apear in birch forrest
Black bear could not only stand on 2 legs to attack they can do it randomly they could destroy bee hives and smilary to panda sit down and eat honey combs instad of bambo
Same as pollar bear they will attack when they have a cub but they won't attack amedietly first they will stand on 2 legs and roar at you to give a signal that you need to back away at least 10 blocks if you won't do that they will attack tamed bear cound be sitable like parrots cats and wolves black bears in real life aren't endangered so they would be extremely common bacause in real life black bear population is very very very very big