Natural Predators:
* Wolves: Wolves are a major predator of bears, especially in North America and Eurasia. They often hunt in packs and can take down even large bears.
* Large Brown Bears: In areas where brown bears co-exist, they can prey on smaller bears, particularly cubs or weaker individuals.
* Polar Bears: While not technically "predators" of other bear species, polar bears are apex predators in their Arctic habitat and can occasionally kill and eat smaller bears.
Other Threats:
* Humans: Humans are a significant threat to bears through habitat destruction, hunting, and conflict with humans.
It's important to note:
* Bears are generally apex predators in their ecosystems.
* Their primary defenses against predators are their size, strength, and sharp claws and teeth.
* The specific predators of a bear species will vary depending on the bear's size, location, and the presence of other predators in that area.