The Grizzly Bear (Ursus arctos horribilis) was listed as a threatened species in 1975. In the lower 48 states, grizzlies can be found in Idaho, Washington, Montana, and Wyoming. There are at least 500-600 grizzlies living in the northwestern Rockies. Idaho has populations of grizzly bears in the Cabinet-Yaak Ecosystem, the Selkirk Ecosystem, and the Greater Yellowstone Ecosystem.
A conservation strategy has been written and implemented for the grizzly bear in the Yellowstone Ecosystem (see link below). Efforts are currently underway to delist the grizzly bear in the Greater Yellowstone Ecosystem.
Idaho Yellowstone Grizzly Bear Plan [PDF] - 54 pages - 1MB