It then chews out a cavity in the centre for a nest chamber with an underwater entrance. In summer, the Muskrat eats aquatic vegetation and in winter it eats clams and frogs. If food is scarce, it will start eating the inner walls of its house. Muskrats cause a lot of damage at airports by undermining streams and ditches, and it also attracts mammals and raptors looking for prey. It is found throughout Canada, except in northern areas of Quebec and Newfoundland.
Muskrats are mostly nocturnal, but they do appear at times during the day.
They will move from one habitat to another overland. The largest rodent found in Canada, the Beaver can measure from 30 to 40 inches in length and can weigh up to 65 lb. It has five toes on all four feet and the hind foot is fully webbed. The tail is broad, flat, and scaly. Its brown underfur is covered with long, stiff guard hairs, and its belly and head are lighter coloured.