Idaho holds only 8 brown bear records from 2000 to 2026, all of them in iNaturalist. Three come from Fremont County and one from neighboring Clark County, on the edge of the Caribou-Targhee National Forest, and one from Boundary County in the far north. A record count this small says more about how hard the animal is to document than how many actually live there.
The edge of a recovering range
Most of these Idaho records sit at the western edge of the Greater Yellowstone Ecosystem, the same recovering grizzly range that spans into Wyoming and Montana. This isn’t a separate Idaho stronghold. It’s the thin leading edge of one range’s slow spread back into forested public land along the upper Snake River drainage, well south of the state’s other grizzly range in the Panhandle’s forests near the Selkirk Mountains, where the Boundary County record falls.
Fitting the interior bear pattern
Interior grizzlies like these lean on a very different diet than the coastal bears made famous by salmon runs. Without a fish run to time the year around, Idaho’s bears fall back on elk and moose calves, roots, seeds, berries, and carrion, the same lean, mixed diet documented across the Northern Rockies. It shows up in the record calendar too. Every recorded Idaho sighting falls between May and September, with nothing in the October-to-April stretch, when brown bears den up and stop eating, drinking, or moving for months at a time.
Status in Idaho
Idaho’s own status data lists the brown bear as native, not introduced, matching its long history across the Northern Rockies. NatureServe leaves the state’s subnational rank Unranked (SNR), meaning Idaho hasn’t been separately assessed under that system, even though the species’ global rank sits at G4.
Full species profile
