Although they belong to the Carnivora order, bears are technically omnivores, as many subsist on plant matter in addition to other animals, insects and fish. Vegetation makes up as much as 90 percent of a bear's diet.
When bears wake from their winter hibernation, food supplies are difficult to come by. They usually scavenge for deer and moose that were killed during the winter. Bears mainly graze for plant food during the early summer, although they have been known to forage for berries, both in the wild and in urban areas. They also eat ants and other insects during the summer. During the fall, bears eat spawning fish or roots and greenery, depending on their location.