Why do beavers build dams? Why do they build canals, and lodges? Did silk hats save beavers from extinction? Which is longer, the Hoover Dam, or the largest beaver dam ever?
Learn all about the North American beaver on this episode of Species.
Bibliography: https://docs.google.com/document/d/1uufPXkcVlmViyoOMwEQYXw5swayShvOeRh-b_TLL01E/edit?usp=sharing
