Skip to Content

Mammals of Massachusetts

American Beaver

American Black Bear

American Water Shrew

Atlantic White-sided Dolphin

Bearded Seal

Beluga Whale

Big Brown Bat

Black-tailed Jackrabbit

Blainville’s Beaked Whale

Blue Whale


Bottlenose Dolphin

Brown Rat

Cinereus Shrew

Common Muskrat


Cuvier’s Beaked Whale

Dwarf Sperm Whale

Eastern Chipmunk

Eastern Cottontail

Eastern Gray Squirrel

Eastern Mole

Eastern Red Bat

Eastern Small-footed Bat


European Rabbit

Fin Whale


Gray Fox

Gray Seal

Hairy-tailed Mole

Harbor Porpoise

Harbor Seal

Harp Seal

Hoary Bat

Hooded Seal

House Mouse

Humpback Whale

Killer Whale

Little Brown Bat

Long-finned Pilot Whale

Long-tailed Shrew

Long-tailed Weasel

Meadow Jumping Mouse

Meadow Vole


New England Cottontail

North American Deer Mouse

North American Porcupine

North American River Otter

North Atlantic Right Whale

Northern Bottlenose Whale

Northern Flying Squirrel

Northern Long-eared Myotis

Northern Short-tailed Shrew

Pantropical Spotted Dolphin

Pygmy Sperm Whale


Red Fox

Red Squirrel

Ringed Seal

Risso’s Dolphin

Sei Whale

Short-beaked Common Dolphin

Short-finned Pilot Whale

Silver-haired Bat

Smoky Shrew

Snowshoe Hare

Southern Bog Lemming

Southern Flying Squirrel

Southern Red-backed Vole

Sowerby’s Beaked Whale

Sperm Whale

Star-nosed Mole

Striped Dolphin

Striped Skunk

Tri-colored Bat

True’s Beaked Whale

Virginia Opossum

White-beaked Dolphin

White-footed Deermouse

White-tailed Deer


Woodland Jumping Mouse

Woodland Vole

Source: Massachusetts Government Website