In the mountainous districts and high plateaus are the grizzly, formerly more common, the black bear, the four-striped chipmunk and the yellow-haired porcupine.
In the mountains are elk, puma, lynx, the varying hare and snowshoe rabbit, the yellow-haired porcupine, Fremont's and Bailey's squirrels, the mountain sheep, the four-striped chipmunk, Townsend's spermophile, the prong-horned antelope, the cinnamon pack-rat, grizzly, brown, silvertip and black bears and the wolverine.
The red, or Virginia, deer and the grey fox are still found in circumscribed localities; and of the smaller mammals, the squirrel, chipmunk, rabbit, raccoon and opossum are still numerous.
It is the home of the Columbia black-tail deer, western raccoon, Oregon spotted skunk, Douglas red squirrel, Townsends chipmunk, tailless sewellel (Haplodcn rufus), peculiar species of pocket gophers and voles, Pacific coast forms of the great-horned, spotted, screech and pigmy owls, sooty grouse, Oregon ruffed grouse, Stellers jay, chestnutbacked chickadee and Pacific winter wren.
Among its characteristic mammals and birds are the sage cotton-tail, black-tailed jack-rabbit, Idaho rabbit, Oregon, Utah and Townsends ground squirrels, sage chipmunk, fivetoed kangaroo rats, pocket mice, grasshopper mice, burrowing owl, Brewers sparrow, Nevada sage sparrow, lazuli finch, sage thrasher, Nuttall s poor-will, Bullocks oriole and rough-winged swallow.