Mammals of Maryland
The mammals most often spotted in Maryland, ranked by recent research-grade observations.
129,588
recent observations
50
species listed
50
mammals
Naturalists have logged 129,588 research-grade observations across the 50 most-recorded species in Maryland. The most frequently seen is the White-tailed Deer, with 35,484 recorded sightings.
Rarer finds confirmed in Maryland include Bobcat and Fisher - uncommon enough that a sighting is worth logging.
Most-observed mammals in Maryland
White-tailed Deer
Odocoileus virginianus
35,484 observations
Eastern Gray Squirrel
Sciurus carolinensis
27,174 observations
Red Fox
Vulpes vulpes
12,187 observations
Eastern Cottontail
Sylvilagus floridanus
11,887 observations
Common Raccoon
Procyon lotor
7,044 observations
Eastern Chipmunk
Tamias striatus
4,796 observations
Groundhog
Marmota monax
4,769 observations
American Beaver
Castor canadensis
4,534 observations
Domestic Cat
Felis catus
2,999 observations
Virginia Opossum
Didelphis virginiana
2,244 observations
Muskrat
Ondatra zibethicus
2,207 observations
Domestic Horse
Equus caballus
1,804 observations · iNaturalist
Northern Short-tailed Shrew
Blarina brevicauda
1,708 observations
American Black Bear
Ursus americanus
1,096 observations
Coyote
Canis latrans
1,068 observations
North American River Otter
Lontra canadensis
931 observations
Eastern Fox Squirrel
Sciurus niger
894 observations
Sika Deer
Cervus nippon
700 observations
Striped Skunk
Mephitis mephitis
576 observations
Brown Rat
Rattus norvegicus
538 observations
Eastern Red Bat
Lasiurus borealis
488 observations
White-footed Mouse
Peromyscus leucopus
482 observations
Tamanend's Bottlenose Dolphin
Tursiops erebennus
442 observations
Eastern Mole
Scalopus aquaticus
379 observations
American Mink
Neogale vison
361 observations
Southern Flying Squirrel
Glaucomys volans
360 observations
Big Brown Bat
Eptesicus fuscus
325 observations
House Mouse
Mus musculus
314 observations
American Red Squirrel
Tamiasciurus hudsonicus
221 observations
Harbor Seal
Phoca vitulina
166 observations
Grey Seal
Halichoerus grypus
163 observations
Silver-haired Bat
Lasionycteris noctivagans
145 observations
Gray Fox
Urocyon cinereoargenteus
142 observations
Eastern Meadow Vole
Microtus pennsylvanicus
131 observations
Bobcat
Lynx rufus
128 observations
North American Porcupine
Erethizon dorsatum
115 observations
North American Least Shrew
Cryptotis parvus
85 observations · iNaturalist
Woodland Vole
Microtus pinetorum
62 observations
Tri-coloured Bat
Perimyotis subflavus
53 observations
Eastern Small-footed Myotis
Myotis leibii
49 observations
Domestic Dog
Canis familiaris
47 observations · iNaturalist
Masked Shrew
Sorex cinereus
46 observations
Eastern Deermouse
Peromyscus maniculatus
45 observations
Northern Hoary Bat
Lasiurus cinereus
36 observations
Fisher
Pekania pennanti
32 observations
Appalachian Cottontail
Sylvilagus obscurus
30 observations
European Rabbit
Oryctolagus cuniculus
29 observations · iNaturalist
Hispid Cotton Rat
Sigmodon hispidus
25 observations
Humpback Whale
Megaptera novaeangliae
24 observations
Northern Meadow Jumping Mouse
Zapus hudsonius
23 observations
Mammals in nearby places
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