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Mammals of Alaska

The mammals most often spotted in Alaska, ranked by recent research-grade observations.

61,052
recent observations
50
species listed
50
mammals

Naturalists have logged 61,052 research-grade observations across the 50 most-recorded species in Alaska. The most frequently seen is the Moose, with 9,385 recorded sightings.

Rarer finds confirmed in Alaska include Grizzly Bear, Gray Wolf, Canada Lynx and Wolverine - uncommon enough that a sighting is worth logging.

Grizzly BearGray WolfCanada LynxWolverine

Most-observed mammals in Alaska

Moose
Alces alces
9,385 observations
Brown Bear
Ursus arctos
5,320 observations
Humpback Whale
Megaptera novaeangliae
4,308 observations
American Red Squirrel
Tamiasciurus hudsonicus
3,859 observations
Sea Otter
Enhydra lutris
3,275 observations
Steller Sea Lion
Eumetopias jubatus
2,891 observations
Arctic Ground Squirrel
Urocitellus parryii
2,754 observations
American Black Bear
Ursus americanus
2,724 observations
Caribou
Rangifer tarandus
2,629 observations
Harbor Seal
Phoca vitulina
2,614 observations
Red Fox
Vulpes vulpes
1,807 observations
Thinhorn Sheep
Ovis dalli
1,807 observations
Snowshoe Hare
Lepus americanus
1,750 observations
Orca
Orcinus orca
1,502 observations
Mule Deer
Odocoileus hemionus
1,493 observations
North American Porcupine
Erethizon dorsatum
1,437 observations
American Beaver
Castor canadensis
1,190 observations
Mountain Goat
Oreamnos americanus
1,124 observations
Muskox
Ovibos moschatus
797 observations
Hoary Marmot
Marmota caligata
774 observations
North American River Otter
Lontra canadensis
574 observations
Gray Wolf
Canis lupus
543 observations
Collared Pika
Ochotona collaris
510 observations
Coyote
Canis latrans
469 observations
Muskrat
Ondatra zibethicus
455 observations
Canada Lynx
Lynx canadensis
450 observations
Dall's Porpoise
Phocoenoides dalli
434 observations
Beluga
Delphinapterus leucas
337 observations
Least Chipmunk
Neotamias minimus
324 observations
Wapiti
Cervus canadensis
322 observations
Wolverine
Gulo gulo
314 observations
Northern Red-backed Vole
Clethrionomys rutilus
280 observations · iNaturalist
American Mink
Neogale vison
250 observations
American Marten
Martes americana
245 observations
Polar Bear
Ursus maritimus
221 observations
Fin Whale
Balaenoptera physalus
219 observations
Eurasian Stoat
Mustela erminea
204 observations
European Rabbit
Oryctolagus cuniculus
203 observations
Arctic Fox
Vulpes lagopus
194 observations
Grey Whale
Eschrichtius robustus
147 observations
American Bison
Bos bison
135 observations · iNaturalist
Domestic Horse
Equus caballus
134 observations
Harbour Porpoise
Phocoena phocoena
129 observations
Ringed Seal
Pusa hispida
103 observations
Bowhead Whale
Balaena mysticetus
91 observations
Nearctic Brown Lemming
Lemmus trimucronatus
77 observations
Walrus
Odobenus rosmarus
70 observations
Tundra Vole
Alexandromys oeconomus
64 observations
Bearded Seal
Erignathus barbatus
58 observations
Little Brown Bat
Myotis lucifugus
56 observations

Built from recent research-grade iNaturalist observations. Identifications are community-sourced and may occasionally be wrong, and the ranking reflects where people record and photograph wildlife, so a species seen often here is not necessarily rare elsewhere. Some plants and animals are only out in certain seasons. Treat this as a lively snapshot of what people are finding, not a formal checklist.

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