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White-tailed Deer
Odocoileus virginianus
17,492 observations
Eastern Gray Squirrel
Sciurus carolinensis
12,956 observations
Eastern Cottontail
Sylvilagus floridanus
6,753 observations
Red Fox
Vulpes vulpes
6,682 observations
Common Raccoon
Procyon lotor
4,048 observations
Groundhog
Marmota monax
3,010 observations
American Beaver
Castor canadensis
2,507 observations
Eastern Chipmunk
Tamias striatus
1,810 observations
Domestic Horse
Equus caballus
1,393 observations
Virginia Opossum
Didelphis virginiana
1,368 observations
Domestic Cat
Felis catus
1,259 observations
Northern Short-tailed Shrew
Blarina brevicauda
1,041 observations
Muskrat
Ondatra zibethicus
996 observations
North American River Otter
Lontra canadensis
635 observations
Coyote
Canis latrans
527 observations
Sika Deer
Cervus nippon
514 observations
Eastern Fox Squirrel
Sciurus niger
371 observations
White-footed Mouse
Peromyscus leucopus
328 observations
American Black Bear
Ursus americanus
323 observations
Eastern Red Bat
Lasiurus borealis
279 observations
Striped Skunk
Mephitis mephitis
237 observations
Eastern Mole
Scalopus aquaticus
210 observations
Brown Rat
Rattus norvegicus
209 observations
American Mink
Neogale vison
195 observations
American Red Squirrel
Tamiasciurus hudsonicus
180 observations
House Mouse
Mus musculus
177 observations
Southern Flying Squirrel
Glaucomys volans
172 observations
Big Brown Bat
Eptesicus fuscus
164 observations
Tamanend's Bottlenose Dolphin
Tursiops erebennus
155 observations
North American Porcupine
Erethizon dorsatum
126 observations
Eastern Meadow Vole
Microtus pennsylvanicus
86 observations
Silver-haired Bat
Lasionycteris noctivagans
61 observations
Gray Fox
Urocyon cinereoargenteus
56 observations
Bobcat
Lynx rufus
37 observations
Harbor Seal
Phoca vitulina
36 observations
North American Least Shrew
Cryptotis parvus
36 observations
Masked Shrew
Sorex cinereus
30 observations
Domestic Dog
Canis familiaris
29 observations
Woodland Vole
Microtus pinetorum
26 observations
Fisher
Pekania pennanti
24 observations
Eastern Deer Mouse
Peromyscus maniculatus
23 observations
Hairy-tailed Mole
Parascalops breweri
22 observations
European Rabbit
Oryctolagus cuniculus
18 observations
Tri-coloured Bat
Perimyotis subflavus
18 observations
Star-nosed Mole
Condylura cristata
17 observations
Northern Hoary Bat
Lasiurus cinereus
16 observations
Northern Meadow Jumping Mouse
Zapus hudsonius
16 observations
Grey Seal
Halichoerus grypus
15 observations
Northeastern Marsh Rice Rat
Oryzomys palustris
11 observations
Humpback Whale
Megaptera novaeangliae
10 observations
Frequently Asked Questions
- The 10 most common mammals in Maryland are:
- White-tailed Deer (Odocoileus virginianus)
- Eastern Gray Squirrel (Sciurus carolinensis)
- Eastern Cottontail (Sylvilagus floridanus)
- Red Fox (Vulpes vulpes)
- Common Raccoon (Procyon lotor)
- Groundhog (Marmota monax)
- American Beaver (Castor canadensis)
- Eastern Chipmunk (Tamias striatus)
- Domestic Horse (Equus caballus)
- Virginia Opossum (Didelphis virginiana)
- The most observed mammal in Maryland is White-tailed Deer (Odocoileus virginianus), with 17,492 recorded observations.
- Some of the most commonly observed native mammals in Maryland include:
- Northeastern Marsh Rice Rat (Oryzomys palustris)