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Mule Deer
Odocoileus hemionus
15,702 observations
Eastern Cottontail
Sylvilagus floridanus
8,213 observations
Eastern Gray Squirrel
Sciurus carolinensis
7,400 observations
Harbor Seal
Phoca vitulina
6,122 observations
Douglas's Squirrel
Tamiasciurus douglasii
6,089 observations
Common Raccoon
Procyon lotor
3,820 observations
Hoary Marmot
Marmota caligata
3,329 observations
American Beaver
Castor canadensis
3,238 observations
Cascade Golden-mantled Ground Squirrel
Callospermophilus saturatus
2,876 observations
Wapiti
Cervus canadensis
2,803 observations
Coyote
Canis latrans
2,609 observations
North American River Otter
Lontra canadensis
2,521 observations
American Pika
Ochotona princeps
2,373 observations
American Black Bear
Ursus americanus
2,161 observations
Townsend's Chipmunk
Neotamias townsendii
1,889 observations
Orca
Orcinus orca
1,835 observations
Yellow-bellied Marmot
Marmota flaviventris
1,630 observations
Mountain Goat
Oreamnos americanus
1,557 observations
Yellow-pine Chipmunk
Neotamias amoenus
1,398 observations
California Sea Lion
Zalophus californianus
1,305 observations
White-tailed Deer
Odocoileus virginianus
1,241 observations
Steller Sea Lion
Eumetopias jubatus
1,037 observations
Red Fox
Vulpes vulpes
969 observations
Olympic Marmot
Marmota olympus
960 observations
Domestic Cat
Felis catus
862 observations
Muskrat
Ondatra zibethicus
800 observations
Snowshoe Hare
Lepus americanus
791 observations
Virginia Opossum
Didelphis virginiana
785 observations
Moose
Alces alces
734 observations
Bobcat
Lynx rufus
578 observations
Humpback Whale
Megaptera novaeangliae
567 observations
Bighorn Sheep
Ovis canadensis
542 observations
Eastern Fox Squirrel
Sciurus niger
525 observations
Coypu
Myocastor coypus
520 observations
Harbour Porpoise
Phocoena phocoena
519 observations
Western Deer Mouse
Peromyscus sonoriensis
479 observations
American Red Squirrel
Tamiasciurus hudsonicus
467 observations
North American Porcupine
Erethizon dorsatum
464 observations
Brown Rat
Rattus norvegicus
461 observations
Grey Whale
Eschrichtius robustus
443 observations
American Mink
Neogale vison
436 observations
European Rabbit
Oryctolagus cuniculus
430 observations
Mountain Lion
Puma concolor
406 observations
American Shrewmole
Neurotrichus gibbsii
404 observations
Sea Otter
Enhydra lutris
396 observations
Long-tailed Weasel
Neogale frenata
372 observations
Columbian Ground Squirrel
Urocitellus columbianus
347 observations
Douglas's Ground Squirrel
Otospermophilus douglasii
345 observations
Striped Skunk
Mephitis mephitis
233 observations
Black Rat
Rattus rattus
211 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)
- Harbor Seal (Phoca vitulina)
- Douglas's Squirrel (Tamiasciurus douglasii)
- Common Raccoon (Procyon lotor)
- Hoary Marmot (Marmota caligata)
- American Beaver (Castor canadensis)
- Cascade Golden-mantled Ground Squirrel (Callospermophilus saturatus)
- Wapiti (Cervus canadensis)
- The most observed mammal in Washington is Mule Deer (Odocoileus hemionus), with 15,702 recorded observations.