Home
Vertebrates
All
Amphibians
Birds
Fish
Mammals
Reptiles
Reptiles and Amphibians
Sharks and Rays
Insects
All
Ants
Beetles
Bees
Butterflies
Cicadas
Damselflies
Dragonflies
Dragonflies and Damselflies
Fleas
Flies (Diptera)
Grasshoppers and Crickets
Hornets and Wasps
Katydids
Mosquitoes
Moths
Planthoppers
Robber Flies
Sawflies, Horntails, Wood Wasps
Scale Insects
Stoneflies
Tiger Beetles
Treehoppers
True Bugs (Hemiptera)
Other Invertebrates
Amphipods
Bivalves - Freshwater
Bivalves - Saltwater
Crabs, Lobsters, and Shrimp
Crayfish
Earthworms
Gastropods
Harvestmen
Isopods
Jellyfish
Nematodes
Proturans
Sea Urchins
Spiders
Springtails
Ticks
Plants
Browse by family
Aster Family
Bryophytes
Carnivorous Plants
Clubmosses, Quillworts, Spikemosses
Ferns
Grasses
Iris Family
Milkweed Family
Mosses
Orchids
Pea Family
Rose Family
Sedges and Rushes
Fungi/Other
Algae - Freshwater
Algae - Marine Macroalgae
Algae - Marine Microalgae
Fungi - All
Fungi - Browse by family
Fungi - Ascomycota
Fungi - Basidiomycota
Lichens
Slime Molds
Explore
Bibliography
Maryland Quad Map
Maryland Quad Heat Map
Top 100 Contributors by Species
Top 100 Contributors by Species (2024)
Top 100 Contributors by Records
Recent Discoveries (this month)
iNaturalist Integration Summary
MBP Brochure
Partnerships
Editors
Photographers
Get Involved
FAQs
About Records
Dedication
Links
MBP on Facebook
MBP on Twitter
MBP on Instagram
MBP project at iNaturalist
Share photos on Flickr
MBP Google Group
Maryland Plant Atlas
MD/DCRC Resources
Stewart and Robbins (1958)
eBird
Sites
Andelot Farm
Chino Farms
Dans Rock Bird Count
Fort Smallwood Park
Horn Point Laboratory
Howard County Conservancy
Jemicy School
Rocky Gap State Park
Turkey Point Bird Count
Weinberg Park
Maryland Checklist - Class: Mammalia - all-time (Total: 105)
Filter by tag...
Show All
Adventive
\n
Coastal Plain only
\n
Endangered (Federal)
\n
Endangered (MD)
\n
Excluded
\n
Exotic
\n
Extinct
\n
Extirpated
\n
Extralimital
\n
G1 (Highly globally rare)
\n
G1G2 (Highly globally rare)
\n
G2 (Globally rare)
\n
G2G3 (Globally rare)
\n
G3 (Globally rare/local)
\n
G3G4 (Globally vulnerable)
\n
G4
\n
G4G5
\n
G5
\n
Garrett only
\n
GH (No known extant occurrences)
\n
GU (Global status uncertain)
\n
Hybrid
\n
In need of conservation
\n
Invasive
\n
Nativity Uncertain
\n
Non-native
\n
Reviewable (MD/DCRC)
\n
S1 (Highly state rare)
\n
S1B (Highly state rare breeder)
\n
S1M (State rare migrant)
\n
S1N (State rare non-breeder)
\n
S1S2 (Highly state rare)
\n
S1S2B (State rare breeder)
\n
S2 (State rare)
\n
S2B (State rare breeder)
\n
S2B (State rare breeder)
\n
S2S3 (State rare)
\n
S2S3B (State rare breeder)
\n
S3 (Watch list)
\n
S3B (State watchlist breeder)
\n
S3S4
\n
S3S4B (State watchlist breeder)
\n
S4SE
\n
SH (Historical)
\n
SHB (State historical breeder)
\n
SR (State rare)
\n
Status Uncertain
\n
SUB (Status uncertain breeder)
\n
SXB (State extirpated breeder)
\n
SXM (State extirpated migrant)
\n
Threatened (Federal)
\n
Threatened (MD)
\n
Undescribed
\n
Vulnerable
\n
Waif
\n
Western MD only
\n
Worcester only
\n
Photos
Common Name
Genus
Species
Records  
Category
Family
Order
Class
Kingdom
1
Blue Whale
Balaenoptera
musculus
1
Mammals
Balaenopteridae
Cetacea
Mammalia
Animalia
2
Seminole Bat
Lasiurus
seminolus
1
Mammals
Vespertilionidae
Chiroptera
Mammalia
Animalia
3
Long-tailed Shrew
Sorex
dispar
23
Mammals
Soricidae
Soricomorpha
Mammalia
Animalia
4
Southern Red-backed Vole
Myodes
gapperi
183
Mammals
Muridae
Rodentia
Mammalia
Animalia
5
Hoary Bat
Lasiurus
cinereus
10
Mammals
Vespertilionidae
Chiroptera
Mammalia
Animalia
6
Pygmy Sperm Whale
Kogia
breviceps
3
Mammals
Kogiidae
Cetacea
Mammalia
Animalia
7
Mink
Neovison
vison
127
Mammals
Mustelidae
Carnivora
Mammalia
Animalia
8
North Atlantic Right Whale
Eubalaena
glacialis
3
Mammals
Balaenidae
Cetacea
Mammalia
Animalia
9
Delmarva Fox Squirrel
Sciurus
niger
cinereus
270
Mammals
Sciuridae
Rodentia
Mammalia
Animalia
10
Northern Short-tailed Shrew
Blarina
brevicauda
713
Mammals
Soricidae
Soricomorpha
Mammalia
Animalia
11
Rock Vole
Microtus
chrotorrhinus
5
Mammals
Muridae
Rodentia
Mammalia
Animalia
12
Eastern Cottontail
Sylvilagus
floridanus
1649
Mammals
Leporidae
Lagomorpha
Mammalia
Animalia
13
Sperm Whale
Physeter
macrocephalus
2
Mammals
Physeteridae
Cetacea
Mammalia
Animalia
14
Eastern Spotted Skunk
Spilogale
putorius
24
Mammals
Mephitidae
Carnivora
Mammalia
Animalia
15
Coyote
Canis
latrans
165
Mammals
Canidae
Carnivora
Mammalia
Animalia
16
Hairy-tailed Mole
Parascalops
breweri
14
Mammals
Talpidae
Soricomorpha
Mammalia
Animalia
17
Muskrat
Ondatra
zibethicus
371
Mammals
Muridae
Rodentia
Mammalia
Animalia
18
Snowshoe Hare
Lepus
americanus
10
Mammals
Leporidae
Lagomorpha
Mammalia
Animalia
19
Bottle-nosed Dolphin
Tursiops
truncatus
99
Mammals
Delphinidae
Cetacea
Mammalia
Animalia
20
Virginia Opossum
Didelphis
virginiana
458
Mammals
Didelphidae
Didelphimorphia
Mammalia
Animalia
21
Harbor Seal
Phoca
vitulina
24
Mammals
Phocidae
Carnivora
Mammalia
Animalia
22
Red Fox
Vulpes
vulpes
1046
Mammals
Canidae
Carnivora
Mammalia
Animalia
23
Star-nosed Mole
Condylura
cristata
36
Mammals
Talpidae
Soricomorpha
Mammalia
Animalia
24
Black Rat
Rattus
rattus
16
Mammals
Muridae
Rodentia
Mammalia
Animalia
25
Woodchuck
Marmota
monax
667
Mammals
Sciuridae
Rodentia
Mammalia
Animalia
26
Striped Dolphin
Stenella
coeruleoalba
12
Mammals
Delphinidae
Cetacea
Mammalia
Animalia
27
Southeastern Shrew
Sorex
longirostris
26
Mammals
Soricidae
Soricomorpha
Mammalia
Animalia
28
Hooded Seal
Cystophora
cristata
2
Mammals
Phocidae
Carnivora
Mammalia
Animalia
29
Black Bear
Ursus
americanus
156
Mammals
Ursidae
Carnivora
Mammalia
Animalia
30
Indiana Bat
Myotis
sodalis
20
Mammals
Vespertilionidae
Chiroptera
Mammalia
Animalia
31
House Mouse
Mus
musculus
151
Mammals
Muridae
Rodentia
Mammalia
Animalia
32
Eastern Fox Squirrel
Sciurus
niger
niger
111
Mammals
Sciuridae
Rodentia
Mammalia
Animalia
33
Risso's Dolphin
Grampus
griseus
8
Mammals
Delphinidae
Cetacea
Mammalia
Animalia
34
Mountain Lion
Puma
concolor
0
Mammals
Felidae
Carnivora
Mammalia
Animalia
35
Northern Myotis
Myotis
septentrionalis
12
Mammals
Vespertilionidae
Chiroptera
Mammalia
Animalia
36
Woodland Jumping Mouse
Napaeozapus
insignis
23
Mammals
Muridae
Rodentia
Mammalia
Animalia
37
American Marten
Martes
americana
0
Mammals
Mustelidae
Carnivora
Mammalia
Animalia
38
Southern Flying Squirrel
Glaucomys
volans
213
Mammals
Sciuridae
Rodentia
Mammalia
Animalia
39
Long-finned Pilot Whale
Globicephala
melas
5
Mammals
Delphinidae
Cetacea
Mammalia
Animalia
40
Elk
Cervus
elaphus
1
Mammals
Cervidae
Artiodactyla
Mammalia
Animalia
41
Tri-colored Bat
Pipistrellus
subflavus
75
Mammals
Vespertilionidae
Chiroptera
Mammalia
Animalia
42
Nutria
Myocastor
coypus
28
Mammals
Myocastoridae
Rodentia
Mammalia
Animalia
43
Ermine
Mustela
erminea
1
Mammals
Mustelidae
Carnivora
Mammalia
Animalia
44
Melon-headed Whale
Peponocephala
electra
1
Mammals
Delphinidae
Cetacea
Mammalia
Animalia
45
White-tailed Deer
Odocoileus
virginianus
2982
Mammals
Cervidae
Artiodactyla
Mammalia
Animalia
46
Marsh Rice Rat
Oryzomys
palustris
27
Mammals
Muridae
Rodentia
Mammalia
Animalia
47
Eastern Red Bat
Lasiurus
borealis
119
Mammals
Vespertilionidae
Chiroptera
Mammalia
Animalia
48
True's Beaked Whale
Mesoplodon
mirus
1
Mammals
Hyperoodontidae
Cetacea
Mammalia
Animalia
49
Long-tailed Weasel
Mustela
frenata
77
Mammals
Mustelidae
Carnivora
Mammalia
Animalia
50
Fin Whale
Balaenoptera
physalus
14
Mammals
Balaenopteridae
Cetacea
Mammalia
Animalia
51
Feral Horse
Equus
caballus
319
Mammals
Equidae
Perissodactyla
Mammalia
Animalia
52
Deer Mouse
Peromyscus
maniculatus
154
Mammals
Muridae
Rodentia
Mammalia
Animalia
53
Evening Bat
Nycticeius
humeralis
8
Mammals
Vespertilionidae
Chiroptera
Mammalia
Animalia
54
Dwarf Sperm Whale
Kogia
simus
1
Mammals
Kogiidae
Cetacea
Mammalia
Animalia
55
Northern River Otter
Lontra
canadensis
211
Mammals
Mustelidae
Carnivora
Mammalia
Animalia
56
Minke Whale
Balaenoptera
acutorostrata
3
Mammals
Balaenopteridae
Cetacea
Mammalia
Animalia
57
Human
Homo
sapiens
388
Mammals
Hominidae
Primates
Mammalia
Animalia
58
Smoky Shrew
Sorex
fumeus
63
Mammals
Soricidae
Soricomorpha
Mammalia
Animalia
59
Allegheny Woodrat
Neotoma
magister
48
Mammals
Muridae
Rodentia
Mammalia
Animalia
60
Appalachian Cottontail
Sylvilagus
obscurus
44
Mammals
Leporidae
Lagomorpha
Mammalia
Animalia
61
Short-beaked Common Dolphin
Delphinus
delphis
8
Mammals
Delphinidae
Cetacea
Mammalia
Animalia
62
Striped Skunk
Mephitis
mephitis
146
Mammals
Mephitidae
Carnivora
Mammalia
Animalia
63
Humpback Whale
Megaptera
novaeangliae
20
Mammals
Balaenopteridae
Cetacea
Mammalia
Animalia
64
Black-tailed Jackrabbit
Lepus
californicus
3
Mammals
Leporidae
Lagomorpha
Mammalia
Animalia
65
Pygmy Shrew
Sorex
hoyi
15
Mammals
Soricidae
Soricomorpha
Mammalia
Animalia
66
Meadow Vole
Microtus
pennsylvanicus
430
Mammals
Muridae
Rodentia
Mammalia
Animalia
67
Eastern Chipmunk
Tamias
striatus
836
Mammals
Sciuridae
Rodentia
Mammalia
Animalia
68
Atlantic Spotted Dolphin
Stenella
frontalis
3
Mammals
Delphinidae
Cetacea
Mammalia
Animalia
69
Masked Shrew
Sorex
cinereus
409
Mammals
Soricidae
Soricomorpha
Mammalia
Animalia
70
Harp Seal
Phoca
groenlandica
8
Mammals
Phocidae
Carnivora
Mammalia
Animalia
71
West Indian Manatee
Trichechus
manatus
14
Mammals
Trichechidae
Sirenia
Mammalia
Animalia
72
Domestic Cat
Felis
catus
216
Mammals
Felidae
Carnivora
Mammalia
Animalia
73
Least Shrew
Cryptotis
parva
108
Mammals
Soricidae
Soricomorpha
Mammalia
Animalia
74
Woodland Vole
Microtus
pinetorum
111
Mammals
Muridae
Rodentia
Mammalia
Animalia
75
Eastern Gray Squirrel
Sciurus
carolinensis
2526
Mammals
Sciuridae
Rodentia
Mammalia
Animalia
76
Atlantic White-sided Dolphin
Lagenorhynchus
acutus
3
Mammals
Delphinidae
Cetacea
Mammalia
Animalia
77
Water Shrew
Sorex
palustris
11
Mammals
Soricidae
Soricomorpha
Mammalia
Animalia
78
Gray Seal
Halichoerus
grypus
5
Mammals
Phocidae
Carnivora
Mammalia
Animalia
79
Gray Wolf
Canis
lupus
2
Mammals
Canidae
Carnivora
Mammalia
Animalia
80
Eastern Mole
Scalopus
aquaticus
123
Mammals
Talpidae
Soricomorpha
Mammalia
Animalia
81
Southern Bog Lemming
Synaptomys
cooperi
13
Mammals
Muridae
Rodentia
Mammalia
Animalia
82
Red Squirrel
Tamiasciurus
hudsonicus
226
Mammals
Sciuridae
Rodentia
Mammalia
Animalia
83
Killer Whale
Orcinus
orca
1
Mammals
Delphinidae
Cetacea
Mammalia
Animalia
84
Bobcat
Lynx
rufus
26
Mammals
Felidae
Carnivora
Mammalia
Animalia
85
Gray Fox
Urocyon
cinereoargenteus
194
Mammals
Canidae
Carnivora
Mammalia
Animalia
86
Little Brown Myotis
Myotis
lucifugus
82
Mammals
Vespertilionidae
Chiroptera
Mammalia
Animalia
87
Norway Rat
Rattus
norvegicus
96
Mammals
Muridae
Rodentia
Mammalia
Animalia
88
Short-finned Pilot Whale
Globicephala
macrorhynchus
6
Mammals
Delphinidae
Cetacea
Mammalia
Animalia
89
Sika Deer
Cervus
nippon
299
Mammals
Cervidae
Artiodactyla
Mammalia
Animalia
90
American Beaver
Castor
canadensis
621
Mammals
Castoridae
Rodentia
Mammalia
Animalia
91
Eastern Small-footed Bat
Myotis
leibii
26
Mammals
Vespertilionidae
Chiroptera
Mammalia
Animalia
92
Meadow Jumping Mouse
Zapus
hudsonius
55
Mammals
Muridae
Rodentia
Mammalia
Animalia
93
Common Raccoon
Procyon
lotor
936
Mammals
Procyonidae
Carnivora
Mammalia
Animalia
94
Harbor Porpoise
Phocoena
phocoena
38
Mammals
Phocoenidae
Cetacea
Mammalia
Animalia
95
American Bison
Bison
bison
1
Mammals
Bovidae
Artiodactyla
Mammalia
Animalia
96
Eastern Harvest Mouse
Reithrodontomys
humulis
6
Mammals
Muridae
Rodentia
Mammalia
Animalia
97
Silver-haired Bat
Lasionycteris
noctivagans
18
Mammals
Vespertilionidae
Chiroptera
Mammalia
Animalia
98
North American Porcupine
Erethizon
dorsatus
84
Mammals
Erethizontidae
Rodentia
Mammalia
Animalia
99
Fisher
Martes
pennanti
18
Mammals
Mustelidae
Carnivora
Mammalia
Animalia
100
Sei Whale
Balaenoptera
borealis
3
Mammals
Balaenopteridae
Cetacea
Mammalia
Animalia
101
Gervais' Beaked Whale
Mesoplodon
europaeus
4
Mammals
Hyperoodontidae
Cetacea
Mammalia
Animalia
102
White-footed Mouse
Peromyscus
leucopus
854
Mammals
Muridae
Rodentia
Mammalia
Animalia
103
Big Brown Bat
Eptesicus
fuscus
214
Mammals
Vespertilionidae
Chiroptera
Mammalia
Animalia
104
Cuvier's Beaked Whale
Ziphius
cavirostris
4
Mammals
Hyperoodontidae
Cetacea
Mammalia
Animalia
105
Least Weasel
Mustela
nivalis
29
Mammals
Mustelidae
Carnivora
Mammalia
Animalia
View Hidden Taxa