Mammals of Maryland
The mammals most often spotted in Maryland, ranked by recent research-grade observations.
131,456
recent observations
50
species listed
50
mammals
Naturalists have logged 131,456 research-grade observations across the 50 most-recorded species in Maryland. The most frequently seen is the White-tailed Deer, with 35,995 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
35,995 observations
Eastern Gray Squirrel
Sciurus carolinensis
27,628 observations
Red Fox
Vulpes vulpes
12,420 observations
Eastern Cottontail
Sylvilagus floridanus
12,010 observations
Common Raccoon
Procyon lotor
7,175 observations
Groundhog
Marmota monax
4,859 observations
Eastern Chipmunk
Tamias striatus
4,838 observations
American Beaver
Castor canadensis
4,572 observations
Domestic Cat
Felis catus
3,019 observations
Virginia Opossum
Didelphis virginiana
2,262 observations
Muskrat
Ondatra zibethicus
2,220 observations
Domestic Horse
Equus caballus
1,854 observations · iNaturalist
Northern Short-tailed Shrew
Blarina brevicauda
1,719 observations
American Black Bear
Ursus americanus
1,116 observations
Coyote
Canis latrans
1,079 observations
North American River Otter
Lontra canadensis
938 observations
Eastern Fox Squirrel
Sciurus niger
903 observations
Sika Deer
Cervus nippon
711 observations
Striped Skunk
Mephitis mephitis
589 observations
Brown Rat
Rattus norvegicus
547 observations
Eastern Red Bat
Lasiurus borealis
495 observations
White-footed Mouse
Peromyscus leucopus
484 observations
Tamanend's Bottlenose Dolphin
Tursiops erebennus
468 observations
Eastern Mole
Scalopus aquaticus
380 observations
American Mink
Neogale vison
364 observations
Southern Flying Squirrel
Glaucomys volans
361 observations
Big Brown Bat
Eptesicus fuscus
326 observations
House Mouse
Mus musculus
315 observations
American Red Squirrel
Tamiasciurus hudsonicus
223 observations
Harbor Seal
Phoca vitulina
168 observations
Grey Seal
Halichoerus grypus
163 observations
Silver-haired Bat
Lasionycteris noctivagans
145 observations
Gray Fox
Urocyon cinereoargenteus
141 observations
Bobcat
Lynx rufus
132 observations
Eastern Meadow Vole
Microtus pennsylvanicus
131 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
49 observations · iNaturalist
Masked Shrew
Sorex cinereus
47 observations
Eastern Deermouse
Peromyscus maniculatus
46 observations
Northern Hoary Bat
Lasiurus cinereus
36 observations
Fisher
Pekania pennanti
32 observations
Appalachian Cottontail
Sylvilagus obscurus
30 observations
European Rabbit
Oryctolagus cuniculus
30 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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