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Mule Deer
Odocoileus hemionus
14,967 observations
Eastern Cottontail
Sylvilagus floridanus
7,901 observations
Eastern Gray Squirrel
Sciurus carolinensis
7,200 observations
Harbor Seal
Phoca vitulina
5,716 observations
Douglas's Squirrel
Tamiasciurus douglasii
5,708 observations
Common Raccoon
Procyon lotor
3,702 observations
American Beaver
Castor canadensis
3,100 observations
Hoary Marmot
Marmota caligata
3,014 observations
Wapiti
Cervus canadensis
2,683 observations
Cascade Golden-mantled Ground Squirrel
Callospermophilus saturatus
2,619 observations
Coyote
Canis latrans
2,517 observations
North American River Otter
Lontra canadensis
2,405 observations
American Pika
Ochotona princeps
2,174 observations
American Black Bear
Ursus americanus
1,947 observations
Orca
Orcinus orca
1,732 observations
Townsend's Chipmunk
Neotamias townsendii
1,666 observations
Yellow-bellied Marmot
Marmota flaviventris
1,607 observations
Mountain Goat
Oreamnos americanus
1,432 observations
California Sea Lion
Zalophus californianus
1,268 observations
Yellow-pine Chipmunk
Neotamias amoenus
1,216 observations
White-tailed Deer
Odocoileus virginianus
1,202 observations
Steller Sea Lion
Eumetopias jubatus
969 observations
Red Fox
Vulpes vulpes
934 observations
Olympic Marmot
Marmota olympus
907 observations
Domestic Cat
Felis catus
845 observations
Virginia Opossum
Didelphis virginiana
774 observations
Muskrat
Ondatra zibethicus
765 observations
Snowshoe Hare
Lepus americanus
731 observations
Moose
Alces alces
717 observations
Bobcat
Lynx rufus
553 observations
Humpback Whale
Megaptera novaeangliae
533 observations
Bighorn Sheep
Ovis canadensis
524 observations
Eastern Fox Squirrel
Sciurus niger
515 observations
Harbour Porpoise
Phocoena phocoena
500 observations
Coypu
Myocastor coypus
474 observations
Brown Rat
Rattus norvegicus
451 observations
North American Porcupine
Erethizon dorsatum
446 observations
American Red Squirrel
Tamiasciurus hudsonicus
441 observations
Western Deer Mouse
Peromyscus sonoriensis
441 observations
European Rabbit
Oryctolagus cuniculus
414 observations
Grey Whale
Eschrichtius robustus
411 observations
American Mink
Neogale vison
408 observations
Mountain Lion
Puma concolor
401 observations
American Shrewmole
Neurotrichus gibbsii
375 observations
Sea Otter
Enhydra lutris
361 observations
Long-tailed Weasel
Neogale frenata
360 observations
Douglas's Ground Squirrel
Otospermophilus douglasii
324 observations
Columbian Ground Squirrel
Urocitellus columbianus
319 observations
Striped Skunk
Mephitis mephitis
221 observations
Black Rat
Rattus rattus
196 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)
- American Beaver (Castor canadensis)
- Hoary Marmot (Marmota caligata)
- Wapiti (Cervus canadensis)
- Cascade Golden-mantled Ground Squirrel (Callospermophilus saturatus)
- The most observed mammal in Washington is Mule Deer (Odocoileus hemionus), with 14,967 recorded observations.