Cliff chipmunk

The cliff chipmunk (Neotamias dorsalis) is a small, bushy-tailed squirrel that lives along cliff walls and boulder fields bordering pinyon-juniper woodland in the western United States and Mexico, and is commonly seen from northern Arizona to Colorado. It is about 20 to 25 cm long, weighs around 70 g, and has a gray back, a brown underside and white stripes on the face. It is a very agile climber that scales steep rock faces, and a well known place to see one is the cliffs of the Grand Canyon. It occurs at roughly 1,500 to 3,700 m above sea level and is active mostly by day. Unlike the common ground squirrels it does not build up body fat, and instead keeps caches of food, mainly juniper berries, pine seeds and acorns, which it draws on through the cold winter months. The source describes individuals as living more than twelve years.