The Sonoma chipmunk (Neotamias sonomae) is a species of rodent in the squirrel family, Sciuridae. It is endemic to the U.S. state of California, north of San Francisco Bay, with most of its range within Sonoma County and Marin County. The species is found in areas of coniferous forests such as sticky laurel and ponderosa pine, as well as in chaparral, particularly sagebrush plains. Its range includes elevations from sea level to 1800 meters (5,900 ft). The chipmunk typically lives on the ground and makes burrows, but can also climb and may make nests in trees. Like other members of the Neotamias genus, it has two premolars. This Sonoma chipmunk was photographed in Samuel P. Taylor State Park in Marin County, California.Photograph credit: Frank Schulenburg