What eats a bear?

Answer 1

A tiger, A lion or even a wolf pack. And Humans

Answer 2

In North America, Mountain Lions and humans are the primary predators and consumers of bear flesh. In terms of killing it and then eating it, there is really nothing other than humans, and because any other possible animals that could maybe take down a bear don't live in habitats near near bears.
Humans hunt them for their meat. Any scavenger would eat a dead bear.
People and bear
If a bear is shot by a human, maggots usually eat them for they're Rotten flesh. Sometimes a bear can be eaten by a bird (still if the bear was dead), coyote, wolf. I hope that answered your question correctly. Thanks for asking the question i knew the answer for!
There are not many animals that will choose to eat a bear. Some humans for example might choose to eat bear.

Answer 3

Orcas are known to occasionally kill and feed on swimming polar bears.

Answer 4

The only things that eats bear meat are human hunters and scavengers.