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Common Garter Snake
Thamnophis sirtalis
10,620 observations
Common Watersnake
Nerodia sipedon
4,820 observations
Painted Turtle
Chrysemys picta
4,672 observations
Common Snapping Turtle
Chelydra serpentina
4,103 observations
Common Box Turtle
Terrapene carolina
3,960 observations
Pond Slider
Trachemys scripta
3,057 observations
DeKay's Brownsnake
Storeria dekayi
2,623 observations
Timber Rattlesnake
Crotalus horridus
2,429 observations
Gray Ratsnake
Pantherophis spiloides
2,134 observations
Ring-necked Snake
Diadophis punctatus
2,110 observations
Eastern Milksnake
Lampropeltis triangulum
1,905 observations
Wood Turtle
Glyptemys insculpta
1,210 observations
Eastern Ratsnake
Pantherophis alleghaniensis
874 observations
Red-bellied Snake
Storeria occipitomaculata
718 observations
Northern Red-bellied Cooter
Pseudemys rubriventris
665 observations
Northern Map Turtle
Graptemys geographica
628 observations
Common Five-lined Skink
Plestiodon fasciatus
620 observations
Eastern Copperhead
Agkistrodon contortrix
399 observations
North American Racer
Coluber constrictor
391 observations
Eastern Musk Turtle
Sternotherus odoratus
384 observations
Spiny Softshell
Apalone spinifera
330 observations
Short-headed Garter Snake
Thamnophis brachystoma
316 observations
Queensnake
Regina septemvittata
260 observations
Eastern Fence Lizard
Sceloporus undulatus
249 observations
Smooth Greensnake
Opheodrys vernalis
230 observations
Eastern Hognose Snake
Heterodon platirhinos
222 observations
Spotted Turtle
Clemmys guttata
114 observations
Common Ribbon Snake
Thamnophis saurita
101 observations
Coal Skink
Plestiodon anthracinus
53 observations
Brown Anole
Anolis sagrei
49 observations
Common Wormsnake
Carphophis amoenus
45 observations
Eastern Massasauga
Sistrurus catenatus
45 observations
Smooth Earthsnake
Virginia valeriae
36 observations
Italian Wall Lizard
Podarcis siculus
36 observations
Mediterranean House Gecko
Hemidactylus turcicus
31 observations
Broad-headed Skink
Plestiodon laticeps
26 observations
Rough Greensnake
Opheodrys aestivus
25 observations
River Cooter
Pseudemys concinna
25 observations
False Map Turtle
Graptemys pseudogeographica
11 observations
Three-toed Box Turtle
Terrapene triunguis
9 observations
Bog Turtle
Glyptemys muhlenbergii
6 observations
Green Anole
Anolis carolinensis
5 observations
Diamondback Terrapin
Malaclemys terrapin
5 observations
Red Cornsnake
Pantherophis guttatus
5 observations
Ornate Box Turtle
Terrapene ornata
3 observations
Afghan Tortoise
Testudo horsfieldii
2 observations
Common Wall Lizard
Podarcis muralis
2 observations
Ouachita Map Turtle
Graptemys ouachitensis
2 observations
American Alligator
Alligator mississippiensis
1 observations
Gopher Snake
Pituophis catenifer
1 observations
Frequently Asked Questions
- The 10 most common reptiles in Pennsylvania are:
- Common Garter Snake (Thamnophis sirtalis)
- Common Watersnake (Nerodia sipedon)
- Painted Turtle (Chrysemys picta)
- Common Snapping Turtle (Chelydra serpentina)
- Common Box Turtle (Terrapene carolina)
- Pond Slider (Trachemys scripta)
- DeKay's Brownsnake (Storeria dekayi)
- Timber Rattlesnake (Crotalus horridus)
- Gray Ratsnake (Pantherophis spiloides)
- Ring-necked Snake (Diadophis punctatus)
- The most observed reptile in Pennsylvania is Common Garter Snake (Thamnophis sirtalis), with 10,620 recorded observations.