Adult bears have few natural predators due to their immense size, but young bears are preyed on by large tigers and large grizzly bears. Bears are omnivores and they occasionally kill and eat their cubs.
Lions, tigers and humans are the primary predators and consumers of bears. Otherwise the only animal that can kill a full grown bear is another bear. Bears are omnivores and therefore they eat almost anything, from insects to berries to large animals.
While the polar bear is mostly carnivorous and the giant panda feeds almost entirely on bamboo, the remaining six species are omnivorous, with largely varied diets including both plants and animals.
Bears will eat meat like mice, fish, gophers, birds, dead animals along with eating plants, berries, nuts, fruit and birds. Bears are not picky eaters and will take advantage of a meal anytime.
Bears eat both meat and plants. Their favorite food is Salmon. They eat berries, roots, mice, honey, insects, deer, elk and moose. Bears will eat almost anything if they get hungry enough.