Hare, snowshoe—Occasional in spruce-fir forests and down to about 8,500 feet. Common around Phantom Valley Ranch.
Jackrabbit, whitetail—Uncommon; above treeline on Trail Ridge.
Marmot, yellowbelly—Common everywhere in rocky country, especially on lower Cub Lake Trail.
Mouse, deer—Common everywhere at night; often seen running across road or heard in cabins and tents.
Mouse, western jumping—Uncommon; in dense vegetation along streams.
Muskrat—Often seen at twilight in Sheep Lake and nearby ponds; also in old beaver ponds along lower Cub Lake Trail.
Pika—Fairly common in rockpiles above 9,500 feet, as at Rock Cut on Trail Ridge, along trail on Flattop, above Bear Lake Lodge, and at Longs Peak Boulder Field.
Pocket gopher, northern—Piled diggings evident in most grassland, especially in high country.
Porcupine—Common in ponderosa and lodgepole forests; often encountered on Bear Lake and Grand Lake Highways at night. Dens in rocks.
Squirrel, golden-mantled ground—Common everywhere in rocky country, especially on Trail Ridge, at Bear Lake, and along lower Cub Lake Trail.