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White-tailed Deer
Odocoileus virginianus
15,201 observations
Eastern Gray Squirrel
Sciurus carolinensis
11,347 observations
Red Fox
Vulpes vulpes
5,630 observations
Eastern Cottontail
Sylvilagus floridanus
5,627 observations
Common Raccoon
Procyon lotor
3,504 observations
Groundhog
Marmota monax
2,598 observations
American Beaver
Castor canadensis
2,300 observations
Eastern Chipmunk
Tamias striatus
1,529 observations
Virginia Opossum
Didelphis virginiana
1,196 observations
Domestic Horse
Equus caballus
1,171 observations
Domestic Cat
Felis catus
1,124 observations
Northern Short-tailed Shrew
Blarina brevicauda
978 observations
Muskrat
Ondatra zibethicus
875 observations
North American River Otter
Lontra canadensis
556 observations
Coyote
Canis latrans
474 observations
Sika Deer
Cervus nippon
465 observations
Eastern Fox Squirrel
Sciurus niger
338 observations
White-footed Mouse
Peromyscus leucopus
318 observations
American Black Bear
Ursus americanus
292 observations
Eastern Red Bat
Lasiurus borealis
255 observations
Striped Skunk
Mephitis mephitis
218 observations
Eastern Mole
Scalopus aquaticus
192 observations
Brown Rat
Rattus norvegicus
190 observations
American Mink
Neogale vison
178 observations
House Mouse
Mus musculus
167 observations
Southern Flying Squirrel
Glaucomys volans
160 observations
Big Brown Bat
Eptesicus fuscus
155 observations
American Red Squirrel
Tamiasciurus hudsonicus
155 observations
North American Porcupine
Erethizon dorsatum
124 observations
Tamanend's Bottlenose Dolphin
Tursiops erebennus
112 observations
Eastern Meadow Vole
Microtus pennsylvanicus
86 observations
Silver-haired Bat
Lasionycteris noctivagans
52 observations
Gray Fox
Urocyon cinereoargenteus
51 observations
Harbor Seal
Phoca vitulina
36 observations
North American Least Shrew
Cryptotis parvus
35 observations
Bobcat
Lynx rufus
33 observations
Masked Shrew
Sorex cinereus
29 observations
Eastern Deermouse
Peromyscus maniculatus
25 observations
Woodland Vole
Microtus pinetorum
23 observations
Hairy-tailed Mole
Parascalops breweri
21 observations
Domestic Dog
Canis familiaris
21 observations
Fisher
Pekania pennanti
21 observations
Tricolored Bat
Perimyotis subflavus
18 observations
European Rabbit
Oryctolagus cuniculus
17 observations
Star-nosed Mole
Condylura cristata
16 observations
Northern Hoary Bat
Lasiurus cinereus
15 observations
Northern Meadow Jumping Mouse
Zapus hudsonius
15 observations
Grey Seal
Halichoerus grypus
12 observations
Northeastern Marsh Rice Rat
Oryzomys palustris
11 observations
Humpback Whale
Megaptera novaeangliae
9 observations
Frequently Asked Questions
- The 10 most common mammals in Maryland are:
- White-tailed Deer (Odocoileus virginianus)
- Eastern Gray Squirrel (Sciurus carolinensis)
- Red Fox (Vulpes vulpes)
- Eastern Cottontail (Sylvilagus floridanus)
- Common Raccoon (Procyon lotor)
- Groundhog (Marmota monax)
- American Beaver (Castor canadensis)
- Eastern Chipmunk (Tamias striatus)
- Virginia Opossum (Didelphis virginiana)
- Domestic Horse (Equus caballus)
- The most observed mammal in Maryland is White-tailed Deer (Odocoileus virginianus), with 15,201 recorded observations.
- Some of the most commonly observed native mammals in Maryland include:
- Northeastern Marsh Rice Rat (Oryzomys palustris)