The beaver has a specialized niche. It lives in ponds or small lakes and eats vegetation. It is well adapted to its niche. It is an excellent swimmer, with webbed hind feet and a broad, flat tail. It ...

The American beaver (Castor canadensis) is a keystone species whose ponds and wetlands help replenish groundwater ... from the US-Mexico borderlands to above the Arctic Circle. Beginning in the 1500s, ...