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Mammals of New Hampshire

The mammals most often spotted in New Hampshire, ranked by recent research-grade observations.

40,666
recent observations
50
species listed
50
mammals

Naturalists have logged 40,666 research-grade observations across the 50 most-recorded species in New Hampshire. The most frequently seen is the White-tailed Deer, with 8,456 recorded sightings.

Rarer finds confirmed in New Hampshire include Bobcat and Fisher - uncommon enough that a sighting is worth logging.

BobcatFisher

Most-observed mammals in New Hampshire

White-tailed Deer
Odocoileus virginianus
8,456 observations
American Red Squirrel
Tamiasciurus hudsonicus
3,712 observations
Eastern Chipmunk
Tamias striatus
3,651 observations
Eastern Gray Squirrel
Sciurus carolinensis
2,745 observations
American Beaver
Castor canadensis
2,428 observations
North American Porcupine
Erethizon dorsatum
1,977 observations
Common Raccoon
Procyon lotor
1,959 observations
American Black Bear
Ursus americanus
1,856 observations
Moose
Alces alces
1,828 observations
Coyote
Canis latrans
1,317 observations
Groundhog
Marmota monax
1,092 observations
Red Fox
Vulpes vulpes
1,085 observations
Eastern Cottontail
Sylvilagus floridanus
956 observations
Snowshoe Hare
Lepus americanus
955 observations
Bobcat
Lynx rufus
880 observations
Striped Skunk
Mephitis mephitis
640 observations
Gray Fox
Urocyon cinereoargenteus
608 observations
Muskrat
Ondatra zibethicus
495 observations
Fisher
Pekania pennanti
492 observations
North American River Otter
Lontra canadensis
479 observations
Virginia Opossum
Didelphis virginiana
463 observations
American Mink
Neogale vison
343 observations
Northern Short-tailed Shrew
Blarina brevicauda
282 observations
Harbor Seal
Phoca vitulina
222 observations
Hairy-tailed Mole
Parascalops breweri
195 observations
Big Brown Bat
Eptesicus fuscus
146 observations
Eastern Meadow Vole
Microtus pennsylvanicus
144 observations
American Ermine
Mustela richardsonii
144 observations
American Marten
Martes americana
136 observations
Domestic Cat
Felis catus
101 observations
Long-tailed Weasel
Neogale frenata
85 observations · iNaturalist
Grey Seal
Halichoerus grypus
82 observations
Brown Rat
Rattus norvegicus
73 observations
Humpback Whale
Megaptera novaeangliae
72 observations
White-footed Mouse
Peromyscus leucopus
70 observations
Eastern Woodland Jumping Mouse
Napaeozapus insignis
66 observations
Southern Red-backed Vole
Clethrionomys gapperi
56 observations · iNaturalist
Masked Shrew
Sorex cinereus
54 observations
Star-nosed Mole
Condylura cristata
53 observations
Northern Meadow Jumping Mouse
Zapus hudsonius
52 observations
Southern Flying Squirrel
Glaucomys volans
49 observations
Eastern Deer Mouse
Peromyscus maniculatus
39 observations
Northern Flying Squirrel
Glaucomys sabrinus
24 observations
Woodland Vole
Microtus pinetorum
21 observations
Smoky Shrew
Sorex fumeus
18 observations
Atlantic White-sided Dolphin
Leucopleurus acutus
17 observations · iNaturalist
Fin Whale
Balaenoptera physalus
14 observations
Harp Seal
Pagophilus groenlandicus
13 observations
Eastern Red Bat
Lasiurus borealis
11 observations
Little Brown Bat
Myotis lucifugus
10 observations

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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