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Mule Deer
Odocoileus hemionus
14,257 observations
Eastern Cottontail
Sylvilagus floridanus
7,568 observations
Eastern Gray Squirrel
Sciurus carolinensis
7,039 observations
Douglas's Squirrel
Tamiasciurus douglasii
5,490 observations
Harbor Seal
Phoca vitulina
5,481 observations
Common Raccoon
Procyon lotor
3,597 observations
American Beaver
Castor canadensis
2,886 observations
Hoary Marmot
Marmota caligata
2,756 observations
Elk
Cervus canadensis
2,573 observations
Coyote
Canis latrans
2,443 observations
Cascade Golden-mantled Ground Squirrel
Callospermophilus saturatus
2,386 observations
North American River Otter
Lontra canadensis
2,337 observations
American Pika
Ochotona princeps
2,064 observations
American Black Bear
Ursus americanus
1,796 observations
Orca
Orcinus orca
1,680 observations
Townsend's Chipmunk
Neotamias townsendii
1,553 observations
Yellow-bellied Marmot
Marmota flaviventris
1,530 observations
Mountain Goat
Oreamnos americanus
1,332 observations
California Sea Lion
Zalophus californianus
1,250 observations
White-tailed Deer
Odocoileus virginianus
1,174 observations
Yellow-pine Chipmunk
Neotamias amoenus
1,098 observations
Steller Sea Lion
Eumetopias jubatus
921 observations
Red Fox
Vulpes vulpes
904 observations
Domestic Cat
Felis catus
847 observations
Olympic Marmot
Marmota olympus
835 observations
Virginia Opossum
Didelphis virginiana
759 observations
Muskrat
Ondatra zibethicus
736 observations
Snowshoe Hare
Lepus americanus
687 observations
Moose
Alces alces
687 observations
Bobcat
Lynx rufus
522 observations
Eastern Fox Squirrel
Sciurus niger
508 observations
Bighorn Sheep
Ovis canadensis
507 observations
Humpback Whale
Megaptera novaeangliae
505 observations
Harbour Porpoise
Phocoena phocoena
485 observations
Coypu
Myocastor coypus
468 observations
North American Porcupine
Erethizon dorsatum
435 observations
Brown Rat
Rattus norvegicus
434 observations
American Red Squirrel
Tamiasciurus hudsonicus
428 observations
European Rabbit
Oryctolagus cuniculus
398 observations
Western Deer Mouse
Peromyscus sonoriensis
398 observations
American Mink
Neogale vison
391 observations
Mountain Lion
Puma concolor
388 observations
Grey Whale
Eschrichtius robustus
383 observations
American Shrewmole
Neurotrichus gibbsii
368 observations
Sea Otter
Enhydra lutris
345 observations
Long-tailed Weasel
Neogale frenata
330 observations
Columbian Ground Squirrel
Urocitellus columbianus
310 observations
Douglas's Ground Squirrel
Otospermophilus douglasii
310 observations
Striped Skunk
Mephitis mephitis
202 observations
Black Rat
Rattus rattus
189 observations
Frequently Asked Questions
- The 10 most common mammals in Washington are:
- Mule Deer (Odocoileus hemionus)
- Eastern Cottontail (Sylvilagus floridanus)
- Eastern Gray Squirrel (Sciurus carolinensis)
- Douglas's Squirrel (Tamiasciurus douglasii)
- Harbor Seal (Phoca vitulina)
- Common Raccoon (Procyon lotor)
- American Beaver (Castor canadensis)
- Hoary Marmot (Marmota caligata)
- Elk (Cervus canadensis)
- Coyote (Canis latrans)
- The most observed mammal in Washington is Mule Deer (Odocoileus hemionus), with 14,257 recorded observations.