The seeds are eaten by small rodents, such as the eastern chipmunk and meadow vole. Island mammals include coyote, beaver, white-tailed deer, and eastern chipmunk. "Tamias striatus doorsiensis", a subspecies of eastern chipmunk, was described in 1971. Other species include northern short-tailed shrews, one eastern cottontail, eastern chipmunk, and common raccoon. The eastern chipmunk defends its burrow and lives a solitary life, except during mating season. The eastern chipmunk ("Tamias striatus") is a chipmunk species found in eastern North America. Other mammals include eastern chipmunk, porcupine, black bear, striped skunk, river otter, and bobcat.