Why do beavers build dams?

A beaver stands on top of the dam. (Image credit: Troy Harrison via Getty Images)

Beavers are known for building dams, which the animals construct from trees and branches they cut with their strong incisors, according to the National Park Service (opens in a new tab). The rodents also use grass, rocks and mud to reinforce these structures.

But why do American beavers (Castor canadensis) build dams? Do they live in them?

Leave a Reply

Your email address will not be published. Required fields are marked *