Beavers and their dams play an important role in nature. Because of the dramatic effects their dams have on surrounding ecosystems, these mammals are considered a keystone species. By constructing dams they create wetlands -- lush environments which attract fish, ducks, frogs and other creatures. However, beavers can become a big headache for farmers and landowners -- a problem we'll examine later in this article.
You Might Also Like
Monkey, one of a large group of furred animals whose feet are used much like hands. There are over 200 species of monkeys.
Something mysterious is going on in the bat world. Thousands of bats have been dying and the cause has yet to be determined. One thing most of the dead bats have in common is the appearance of fungus on their bodies. Is fungus the culprit behind the bats' deaths? Take this quiz to learn more about bats versus fungus.