Mammals
Opossums
- Opossum
Shrews
- Masked Shrew
- Vagrant Shrew
- Dusky shrew
- Northern water shrew
- Pacific water shrew
- Trowbridge's shrew
Moles
- Shrew-mole
- Coast mole
- Townsend's mole
Bats
- California myotis
- Yuma myotis
- Little brown myotis
- Long-eared myotis
- Long-legged myotis
- Hoary bat
- Townsend's big-eared bat
- Silver-haired bat
- Big brown bat
Pikas
- Pika
Rabbits and Hares
- Eastern cottontail
- Snowshoe hare
Mountain Beaver
- Mountain beaver
Chipmunks, Marmots, Squirrels
- Yellow-pine Chipmunk
- Townsend's Chipmunk
- Hoary marmot
- Cascade golden-mantled ground squirrel
- Western gray squirrel
- Fox squirrel (introduced)
- Douglas Squirrel
- Northern flying squirrel
Beavers
- Beaver
Mice, Woodrats, Voles
- Deer mouse
- Bushy-tailed woodrat
- Red-backed vole
- Heather vole
- Meadow vole
- Townsend's vole
- Long-tailed vole
- Creeping vole
- Water vole
- Muskrat
- Northern bog lemming
- Norway rat (introduced)
- Black rat (introduced)
- House mouse (introduced)
- Pacific jumping mouse
Porcupines
- Porcupine
Nutrias
- Nutria (introduced)
Coyotes, Wolves, Foxes
- Coyote
- Gray wolf (endangered)
- Red fox
Bears
- Black bear
- Grizzly bear (threatened)
Raccoons
- Raccoon
Weasels
- Marten
- Fisher
- Ermine
- Long-tailed weasel
- Mink
- Wolverine
- Striped skunk
- Western spotted skunk
- River otter
Cats
- Mountain lion
- Lynx
- Bobcat
Elk, Deer, Moose
- Elk
- Mule deer
- White-tailed deer
- Moose
Goats
- Mountain goats
Read more about this topic: List Of Wildlife Of The Skagit River Basin