Marmota monax is the scientific name for the eastern woodchuck, a groundhog found in eastern North America. Synonyms for this species include Arctomys monax, Cynomys monax, and Arctomys caryophyllaceus. Other common names for the eastern woodchuck include whistlepig, land beaver, and groundhog. The name whistlepig comes from the whistling sound they make when alarmed, while the other names relate to their appearance and habitat. Although they are often considered pests due to their burrowing habits, woodchucks play an important role in their ecosystem by aerating the soil and providing food for predators such as foxes and hawks.