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Common Garter Snake
Thamnophis sirtalis
10,019 observations
Common Watersnake
Nerodia sipedon
4,456 observations
Painted Turtle
Chrysemys picta
4,330 observations
Common Snapping Turtle
Chelydra serpentina
3,762 observations
Common Box Turtle
Terrapene carolina
3,647 observations
Pond Slider
Trachemys scripta
2,859 observations
DeKay's Brownsnake
Storeria dekayi
2,518 observations
Timber Rattlesnake
Crotalus horridus
2,203 observations
Ring-necked Snake
Diadophis punctatus
1,959 observations
Gray Ratsnake
Pantherophis spiloides
1,884 observations
Eastern Milksnake
Lampropeltis triangulum
1,761 observations
Wood Turtle
Glyptemys insculpta
1,069 observations
Eastern Ratsnake
Pantherophis alleghaniensis
849 observations
Red-bellied Snake
Storeria occipitomaculata
677 observations
Northern Red-bellied Cooter
Pseudemys rubriventris
628 observations
Northern Map Turtle
Graptemys geographica
583 observations
Common Five-lined Skink
Plestiodon fasciatus
562 observations
Eastern Copperhead
Agkistrodon contortrix
385 observations
North American Racer
Coluber constrictor
359 observations
Eastern Musk Turtle
Sternotherus odoratus
355 observations
Spiny Softshell
Apalone spinifera
307 observations
Short-headed Garter Snake
Thamnophis brachystoma
296 observations
Queensnake
Regina septemvittata
249 observations
Eastern Fence Lizard
Sceloporus undulatus
241 observations
Smooth Greensnake
Opheodrys vernalis
214 observations
Eastern Hognose Snake
Heterodon platirhinos
208 observations
Spotted Turtle
Clemmys guttata
104 observations
Common Ribbon Snake
Thamnophis saurita
94 observations
Coal Skink
Plestiodon anthracinus
48 observations
Brown Anole
Anolis sagrei
47 observations
Common Wormsnake
Carphophis amoenus
44 observations
Eastern Massasauga
Sistrurus catenatus
43 observations
Italian Wall Lizard
Podarcis siculus
36 observations
Smooth Earthsnake
Virginia valeriae
34 observations
Mediterranean House Gecko
Hemidactylus turcicus
31 observations
Rough Greensnake
Opheodrys aestivus
24 observations
River Cooter
Pseudemys concinna
24 observations
Broad-headed Skink
Plestiodon laticeps
24 observations
False Map Turtle
Graptemys pseudogeographica
10 observations
Three-toed Box Turtle
Terrapene triunguis
9 observations
Green Anole
Anolis carolinensis
5 observations
Bog Turtle
Glyptemys muhlenbergii
5 observations
Red Cornsnake
Pantherophis guttatus
5 observations
Diamondback Terrapin
Malaclemys terrapin
4 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)
- Ring-necked Snake (Diadophis punctatus)
- Gray Ratsnake (Pantherophis spiloides)
- The most observed reptile in Pennsylvania is Common Garter Snake (Thamnophis sirtalis), with 10,019 recorded observations.