Not an African or Asian lion, no, since bears and these types of lions are not found in the same vicinity as the other. But a mountain lion? It's possible, but not documented.
not all worms eat mountain lions ( they only eat when dead) and bacteria eat mountain lions dead or alive:
No, they do not eat dead grizzlies.
Bears are like Lions, they can eat anything.
No. they only eat dead animals they never eat live ones
vultures
A raptor can eat a dead bear with no problem
Yes if the lion is dead.
Male lions don't eat their family when injured or dead.
Yes, vultures eat anything dead that they can find.
No, there is no reason to attack a dead animal. They will eat a dead animal though.
If the two animals occupied the same continent, a lion would probably eat a koala (which is not a bear) when it moved between trees. However, lions do not eat koalas, for the simple reason that koalas are native to Australia alone, and there are no lions in Australia.
Well it depends on which bear if it's a polar bear they mostly eat seals or sea lions. Maybe even walruses. If its a grizzly bear probably fish.