Fossils suggest that during the Pleistocene, about 800,000 to 50,000 years ago, the Ungava Collared Lemming lived throughout much of the Arctic regions of North America and Asia. Now it occurs only in the northern half of the Ungava Peninsula in northern Quebec and Labrador, and on two islands in Hudson Bay. Learn more about the Dicrostonyx hudsonius, more commonly known as a Ungava Collared Lemming, in this easy-to-read species overview by the Smithsonian's National Museum of Natural History.