Lemming
Dicrostonyx
Lemmus
Synaptomys
Myopus
* Incomplete listing: see vole
Lemmings are small rodents, usually found in or near the Arctic, in tundra biomes.They are subniveal animals, and together with voles and muskrats, they make up the subfamily Arvicolinae (also known as Microtinae), which forms part of the largest mammal radiation by far, the superfamily Muroidea, which also includes rats, mice, hamsters, and gerbils.
Read more about Lemming: Description and Habitat, Behavior, Misconceptions, Classification