Autumn is the busiest time of the year for beavers – dams must be built in order to ensure they can survive the harsh winter months. Subscribe: http://bit.ly/BBCEarthSub #Yellowstone #Beavers #America Watch more: Best of BBC Earth 🌍 https://bit.ly/BestOfBBCEarth Best Animal Fights 🥊 https://bit.ly/BestAnimalFights Videos over 10 minutes ⏰ https://bit.ly/3SHJCEJ Planet Earth III 🌍 https://bit.ly/PlanetEarthIIIPlaylist Frozen Planet II ❄️ https:/bit.ly/FrozenPlanetIIPlaylist Blue Planet II in 4K 🌊 https://bit.ly/BluePlanetII4kPlaylist Taken from 'Yellowstone' (2009) Yellowstone National Park is one of the world's last and most spectacular wildernesses. It is also home to some of the richest wildlife beyond the plains of Africa. This landmark series follows the intertwining stories of Yellowstone's iconic inhabitants: the grey wolf, the grizzly bear and the herds of antelope and buffalo. In a land of beauty and peril, the dramatic lives and fortunes of these animals are inexorably bound together. Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this. This is a commercial page from BBC Studios. Service information and feedback: http://bbcworldwide.com/vod-feedback--contact-details.aspx