The Hudson Bay Collared lemming is a small rodent that is native to the northern regions of North America. This lemming is known by a number of different synonyms, including the Arctic Collared lemming, the Northern Collared lemming, and the Tundra Collared lemming. These names all refer to the same species of lemming, which is found in a variety of arctic and subarctic habitats. Despite its small size, the Hudson Bay Collared lemming plays an important role in the food chain of its ecosystem, serving as prey for many larger carnivores, including arctic foxes, snowy owls, and even polar bears.