For other uses see groundhog and woodchuck The groundhog (Marmota monax), also known as the woodchuck, land beaver, or whistlepig, is a rodent of the family Sciuridae, belonging to the group of large ground squirrels known as marmots. Most marmots, such as yellow-bellied and hoary marmots, live in rocky and mountainous areas, but the woodchuck is a lowland creature. It is widely distributed in North America and common in the northeastern and central United States. In the west it is found only in Alaska, Alberta, British Columbia, and northern Washington. Anatomy and behavior The groundhog is the largest sciurid in its geographical range, typically measuring 40 to 65 cm (17 to 26 in) long (including a 15 cm tail) and weighing 2 to 4 kg (4.5 to 9 pounds). In areas with fewer natural predators and large quantities of alfalfa, groundhogs can