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Mammals of Newark, NJ

The mammals most often spotted near Newark, ranked by recent research-grade observations.

51,369
recent observations
50
species listed
50
mammals

Naturalists have logged 51,369 research-grade observations across the 50 most-recorded species near Newark. The most frequently seen is the Eastern Gray Squirrel, with 21,622 recorded sightings.

Rarer finds confirmed near Newark include Bobcat and Sei Whale - uncommon enough that a sighting is worth logging.

BobcatSei Whale

Most-observed mammals near Newark

Eastern Gray Squirrel
Sciurus carolinensis
21,622 observations
White-tailed Deer
Odocoileus virginianus
6,729 observations
Eastern Chipmunk
Tamias striatus
3,885 observations
Eastern Cottontail
Sylvilagus floridanus
3,309 observations
Common Raccoon
Procyon lotor
3,269 observations
Groundhog
Marmota monax
2,593 observations
Brown Rat
Rattus norvegicus
2,456 observations
Domestic Cat
Felis catus
1,366 observations
Red Fox
Vulpes vulpes
1,208 observations
Striped Skunk
Mephitis mephitis
681 observations
Virginia Opossum
Didelphis virginiana
662 observations
Northern Short-tailed Shrew
Blarina brevicauda
428 observations
Muskrat
Ondatra zibethicus
364 observations
Harbor Seal
Phoca vitulina
327 observations
Coyote
Canis latrans
319 observations
Eastern Red Bat
Lasiurus borealis
292 observations
American Beaver
Castor canadensis
250 observations
White-footed Mouse
Peromyscus leucopus
232 observations
House Mouse
Mus musculus
207 observations
Humpback Whale
Megaptera novaeangliae
172 observations
American Black Bear
Ursus americanus
167 observations
Tamanend's Bottlenose Dolphin
Tursiops erebennus
156 observations
Silver-haired Bat
Lasionycteris noctivagans
91 observations
American Mink
Neogale vison
82 observations
Grey Seal
Halichoerus grypus
78 observations
Big Brown Bat
Eptesicus fuscus
64 observations
Southern Flying Squirrel
Glaucomys volans
49 observations
Eastern Meadow Vole
Microtus pennsylvanicus
46 observations
Bobcat
Lynx rufus
42 observations
American Red Squirrel
Tamiasciurus hudsonicus
36 observations
North American River Otter
Lontra canadensis
30 observations
Eastern Mole
Scalopus aquaticus
30 observations
Common Dolphin
Delphinus delphis
18 observations
Common Minke Whale
Balaenoptera acutorostrata
16 observations
European Rabbit
Oryctolagus cuniculus
14 observations
Northern Hoary Bat
Lasiurus cinereus
12 observations
Masked Shrew
Sorex cinereus
11 observations
Long-tailed Weasel
Neogale frenata
9 observations · iNaturalist
Star-nosed Mole
Condylura cristata
8 observations
Gray Fox
Urocyon cinereoargenteus
6 observations
Sperm Whale
Physeter macrocephalus
6 observations
Harbour Porpoise
Phocoena phocoena
5 observations
Harp Seal
Pagophilus groenlandicus
4 observations
Eastern Deer Mouse
Peromyscus maniculatus
4 observations
Sei Whale
Balaenoptera borealis
3 observations
Tri-coloured Bat
Perimyotis subflavus
3 observations
Little Brown Bat
Myotis lucifugus
2 observations
Fin Whale
Balaenoptera physalus
2 observations
North American Porcupine
Erethizon dorsatum
2 observations
North American Least Shrew
Cryptotis parvus
2 observations · iNaturalist

Built from recent research-grade iNaturalist observations. Identifications are community-sourced and may occasionally be wrong, and the ranking reflects where people record and photograph wildlife, so a species seen often here is not necessarily rare elsewhere. Some plants and animals are only out in certain seasons. Treat this as a lively snapshot of what people are finding, not a formal checklist.

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