Most black bears usually make their winter dens on the ground but this bear has made hers higher up, and inside the tree is two new-born cubs who have to make their way down... Taken from Wild Alaska. Subscribe: http://bit.ly/BBCEarthSub
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 astounding, entertaining, thought-provoking and educational natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this.