Plant matter
In the spring and summer, grizzly bears eat a variety of plant material, including grasses, sedges, roots, tubers, and berries. They will also eat leaves and buds of trees and shrubs.
Animal matter
Grizzly bears are also predators and scavengers, and they will eat a variety of animals, including salmon, trout, deer, elk, moose, caribou, and bison. They will also eat smaller animals, such as rodents, rabbits, and birds.
Other foods
Grizzly bears will also eat other foods, such as insects, fish eggs, and carrion.
The table below shows the percentage of different food types in grizzly bear diets in different parts of North America:
| Food type | Alaska | British Columbia | Yellowstone | Canada |
| ----------------- | -------------- | ------------------- | ----------- | ----------- |
| Plant matter | 40% | 45% | 55% | 60% |
| Animal matter | 55% | 50% | 40% | 35% |
| Other foods | 5% | 5% | 5% | 5% |
Grizzly bears are opportunistic feeders and will eat whatever is available to them. Their diet varies depending on the season and their location.