The largest rodent in North America is the beaver, which boasts a body length that ranges from 29 to 35 inches, making it the second-largest rodent in the world behind the capybara.
Beavers are large, semiaquatic rodents of the temperate Northern Hemisphere. Beavers are the second-largest living rodents after the capybaras. They have stout bodies with large heads, long chisel-like incisors, brown or gray fur, hand-like front feet, webbed back feet and flat, scaly tails. They are herbivorous and consume tree bark, aquatic plants, grasses and sedges.
Beavers build dams and lodges using tree branches, vegetation, rocks and mud; they chew down trees for building material. Dams impound water and lodges serve as shelters. Their infrastructure creates wetlands used by many other species, and because of their effect on other organisms in the ecosystem, they are considered a keystone species. Adult males and females live in monogamous pairs with their offspring.