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Reptiles & Amphibians of Connecticut

The reptiles & amphibians most often spotted in Connecticut, ranked by recent research-grade observations.

41,626
recent observations
50
species listed
50
reptiles & amphibians

Naturalists have logged 41,626 research-grade observations across the 50 most-recorded species in Connecticut. The most frequently seen is the American Toad, with 3,609 recorded sightings.

Rarer finds confirmed in Connecticut include Green Sea Turtle and Kemp's Ridley Sea Turtle - uncommon enough that a sighting is worth logging.

Green Sea TurtleKemp's Ridley Sea Turtle

Most-observed reptiles & amphibians in Connecticut

American Toad
Anaxyrus americanus
3,609 observations
North American Green Frog
Lithobates clamitans
3,583 observations
Common Garter Snake
Thamnophis sirtalis
3,073 observations
Painted Turtle
Chrysemys picta
2,831 observations
Wood Frog
Lithobates sylvaticus
2,615 observations
Gray Treefrog
Dryophytes versicolor
2,381 observations · iNaturalist
Eastern Red-backed Salamander
Plethodon cinereus
2,273 observations
Pickerel Frog
Lithobates palustris
2,197 observations
Eastern Newt
Notophthalmus viridescens
2,051 observations
Spring Peeper
Pseudacris crucifer
1,960 observations
Common Snapping Turtle
Chelydra serpentina
1,915 observations
Diamondback Terrapin
Malaclemys terrapin
1,828 observations
Common Watersnake
Nerodia sipedon
1,653 observations
American Bullfrog
Lithobates catesbeianus
1,312 observations
Common Box Turtle
Terrapene carolina
1,023 observations
Spotted Salamander
Ambystoma maculatum
985 observations
Central Ratsnake
Pantherophis alleghaniensis
857 observations
Ring-necked Snake
Diadophis punctatus
603 observations
Eastern Milksnake
Lampropeltis triangulum
576 observations
Northern Two-lined Salamander
Eurycea bislineata
534 observations
DeKay's Brownsnake
Storeria dekayi
528 observations
Pond Slider
Trachemys scripta
388 observations
Fowler's Toad
Anaxyrus fowleri
365 observations
North American Racer
Coluber constrictor
353 observations
Spotted Turtle
Clemmys guttata
313 observations
Four-toed Salamander
Hemidactylium scutatum
257 observations
Marbled Salamander
Ambystoma opacum
246 observations
Wood Turtle
Glyptemys insculpta
201 observations
Eastern Musk Turtle
Sternotherus odoratus
196 observations
Northern Dusky Salamander
Desmognathus fuscus
187 observations
Eastern Copperhead
Agkistrodon contortrix
168 observations
Common Ribbon Snake
Thamnophis saurita
106 observations
Eastern Hognose Snake
Heterodon platirhinos
88 observations
Timber Rattlesnake
Crotalus horridus
74 observations
Northern Leopard Frog
Lithobates pipiens
42 observations
Common Wormsnake
Carphophis amoenus
39 observations
Red-bellied Snake
Storeria occipitomaculata
33 observations
Italian Wall Lizard
Podarcis siculus
29 observations
Blue-spotted Salamander
Ambystoma laterale
26 observations
Common Five-lined Skink
Plestiodon fasciatus
19 observations
Brown Anole
Anolis sagrei
14 observations
Green Sea Turtle
Chelonia mydas
13 observations
Common Mudpuppy
Necturus maculosus
12 observations
Eastern Spadefoot
Scaphiopus holbrookii
11 observations
Kemp's Ridley Sea Turtle
Lepidochelys kempii
11 observations
Smooth Greensnake
Opheodrys vernalis
11 observations
Atlantic Coast Leopard Frog
Lithobates kauffeldi
11 observations
Jefferson Salamander
Ambystoma jeffersonianum
9 observations
Loggerhead Sea Turtle
Caretta caretta
9 observations
Eastern Tiger Salamander
Ambystoma tigrinum
8 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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