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.
Ever heard that the grass is always greener on the other side? While we may think of it as a quaint proverb, wildebeests abide by it. In fact, their entire lives' purpose is dedicated to finding the greenest, freshest patch of grass.
From the days of the Wild West to modern times, one thing seems not to have changed: A horse with a broken leg is usually euthanized. To see why, despite all the advances in modern veterinarian medicine, horses rarely recover from a broken leg, take this quiz.