| Olympic Marmots are highly social, living in groups made up of an adult male, one or more adult females, two-year-olds, yearlings, and young. Their diet consists of grasses and sedges, with flowering plants in season. Coyotes, martens, and eagles prey upon Olympic Marmots. Their range is very restricted; they are found only on the Olympic Peninsula of Washington State, in alpine and subalpine meadows at elevations of 1,700-2,000 m.
Males are larger than females.
Merriam, C.H., 1898. Proceedings of the Academy of Natural Sciences of Philadelphia, 50:352.
Mammal Species of the World