This family animal is the emblem of Canada. It is the largest rodent. The adult can weigh up to 45 kg. Its forelimbs are delicate and agile whereas its hindlimbs are large and palmed. Its tail is used as a rubber when it swims, as support when it walks and as a lever to carry logs. They can be observed swimming on the surface when they cross lakes.
Beavers have especially powerful incisors with which they gnaw tree trunks falling to the ground from which they feed on the bark and with which they build family dams. The lake section formed by the dam becomes their assigned territory and protects them from predators. Building huts enables them to gather and store branches for their winter needs.