The Western jumping mouse is a long tailed, sleek-bodied mouse. The pelage is course. They yellowish-gray to ocherous sides are separated sharply from the pale-brown to grayish-brown dorsum; the venter is white, often washed with ochre. The tail is bicolored, but not markedly so.

In Oregon, the species occurs throughout most of the area east of the Cascade range except for the Columbia Basin-Deschutes Plateau region. It also occurs in southern Jackson County. Throughout its range, it is a denizen of mountain meadows, particularly those with small streams.

Without doubt, the most unique feature of the life cycle of the Western jumping mouse is its long period of hibernation - it is active for only two to two-and-a-half months.

Photo from Wikipedia