The Alaska Marmot lives in the Brooks Range, in northern Alaska, squeezing between big, bulky rocks on slopes to dig its dens. Denning on rocky ledges or under boulders offers them some protection from grizzly bears, which would otherwise dig them out. Learn more about the Marmota broweri, more commonly known as an Alaska Marmot, in this easy-to-read species overview by the Smithsonian's National Museum of Natural History.