Mammals of Maryland
The mammals most often spotted in Maryland, ranked by recent research-grade observations.
Most-observed mammals in Maryland
White-tailed Deer
Odocoileus virginianus
33,929 observations
Eastern Gray Squirrel
Sciurus carolinensis
26,227 observations
Red Fox
Vulpes vulpes
11,727 observations
Eastern Cottontail
Sylvilagus floridanus
11,124 observations
Common Raccoon
Procyon lotor
6,816 observations
Eastern Chipmunk
Tamias striatus
4,648 observations
Groundhog
Marmota monax
4,543 observations
American Beaver
Castor canadensis
4,367 observations
Domestic Cat
Felis catus
2,966 observations
Virginia Opossum
Didelphis virginiana
2,170 observations
Muskrat
Ondatra zibethicus
2,160 observations
Domestic Horse
Equus caballus
1,695 observations · iNaturalist
Northern Short-tailed Shrew
Blarina brevicauda
1,687 observations
American Black Bear
Ursus americanus
1,054 observations
Coyote
Canis latrans
1,032 observations
North American River Otter
Lontra canadensis
899 observations
Eastern Fox Squirrel
Sciurus niger
861 observations
Sika Deer
Cervus nippon
666 observations · iNaturalist
Striped Skunk
Mephitis mephitis
542 observations
Brown Rat
Rattus norvegicus
517 observations
Eastern Red Bat
Lasiurus borealis
474 observations
White-footed Mouse
Peromyscus leucopus
474 observations
Tamanend's Bottlenose Dolphin
Tursiops erebennus
402 observations · iNaturalist
Eastern Mole
Scalopus aquaticus
363 observations
American Mink
Neogale vison
358 observations
Southern Flying Squirrel
Glaucomys volans
351 observations
Big Brown Bat
Eptesicus fuscus
314 observations
House Mouse
Mus musculus
304 observations
American Red Squirrel
Tamiasciurus hudsonicus
203 observations
Harbor Seal
Phoca vitulina
160 observations
Grey Seal
Halichoerus grypus
160 observations
Silver-haired Bat
Lasionycteris noctivagans
145 observations
Gray Fox
Urocyon cinereoargenteus
139 observations
Eastern Meadow Vole
Microtus pennsylvanicus
129 observations
Bobcat
Lynx rufus
122 observations
North American Porcupine
Erethizon dorsatum
115 observations
North American Least Shrew
Cryptotis parvus
82 observations · iNaturalist
Tri-coloured Bat
Perimyotis subflavus
51 observations
Eastern Small-footed Myotis
Myotis leibii
47 observations
Woodland Vole
Microtus pinetorum
47 observations
Masked Shrew
Sorex cinereus
45 observations
Eastern Deermouse
Peromyscus maniculatus
43 observations
Domestic Dog
Canis familiaris
43 observations · iNaturalist
Northern Hoary Bat
Lasiurus cinereus
35 observations
Fisher
Pekania pennanti
29 observations
Appalachian Cottontail
Sylvilagus obscurus
28 observations · iNaturalist
European Rabbit
Oryctolagus cuniculus
27 observations · iNaturalist
Northern Meadow Jumping Mouse
Zapus hudsonius
23 observations
Hispid Cotton Rat
Sigmodon hispidus
23 observations
Humpback Whale
Megaptera novaeangliae
22 observations