Thirty-four different types of land mammals live within the two-million-acre refuge, including both open tundra and boreal forest-adapted species. The list below includes their common, Iñupiaq, and scientific names.
Rodents
- Arctic ground squirrel / Siksrik (Urocitellus parryii)
- North American red squirrel / Saqalataayiq (Tamiasciurus hudsonicus)
- Muskrat / Kigvaluk (Ondatra zibethicus)
- Beaver / Pałuqtaq (Castor canadensis)
- North American porcupine/ Iluqtaq (Erethizon dorsatum)
- Greenland collared lemming / Qilaŋmiutauraq (Dicrostonyx groenlandicus)
- Nearctic brown lemming / Aviŋaq (Lemmus trimucronatus)
- Northern redback vole / Aviññaq (Myodes rutilus)
- Meadow vole / Aviññaq (Microtus pennsylvanicus)
- Tundra vole / Aviññaq (Microtus oeconomus)
- Singing vole / Aviññaq (Microtus miurus)
Insectivores (shrews)
- Masked shrew / Ugruŋnaq (Sorex cinereus)
- Dusky shrew / Ugruŋnaq (Sorex obscurus)
- American pygmy shrew / Ugruŋnaq (Sorex eximus)
- Barren ground shrew / Ugruŋnaq (Sorex ugyunak)
- Holarctic least shrew / Ugruŋnaq (Sorex minutissimus)
- Tundra shrew / Ugruŋnaq (Sorex tundrensis)
Lagomorphs (hares)
- Tundra hare / Ukallisugruk (Lepus arcticus)
- Snowshoe hare / Ukalliq (Lepus americanus)
Felids (cats)
- Canada lynx / Nuutuuyiq (Lynx canadensis)
Canids (foxes and wolves)
- Gray wolf / Amaġuq (Canis lupus)
- Arctic fox / Qusraaq (Vulpes lagopus)
- Red fox / Kayuqtuq (Vulpes vulpes)
Ursids (bears)
- Black bear / Iyyaġriq (Ursus americanus)
- Brown bear / Akłaq (Ursus arctos)
Mustelids
- Marten / Qapvaitchiaq (Martes americana)
- Shorttail weasel or ermine/ Tiġiaq (Mustela erminea)
- Least weasel / Tiġiaq (Mustela nivialis)
- Mink / Tiġiaqpak (Neovison vison)
- Wolverine / Qapvik (Gulo gulo)
- River otter / Pamiuqtuuq (Lontra canadensis)
Cervids (deer)
- Moose / Tinniikaq (Alces alces)
- Barren ground caribou/ Tuttu (Rangifer tarandus)
- Muskox / Umiŋmak (Ovibos moschatus)
