Reptiles & Amphibians of Denver, Colorado
The reptiles & amphibians most often spotted near Denver, ranked by recent research-grade observations.
15,878
recent observations
44
species listed
44
reptiles & amphibians
Naturalists have logged 15,878 research-grade observations across the 44 most-recorded species near Denver. The most frequently seen is the Western Terrestrial Garter Snake, with 2,271 recorded sightings.
Most-observed reptiles & amphibians near Denver
Western Terrestrial Garter Snake
Thamnophis elegans
2,271 observations
Gopher Snake
Pituophis catenifer
2,268 observations
Woodhouse's Toad
Anaxyrus woodhousii
2,016 observations
American Bullfrog
Lithobates catesbeianus
1,253 observations
Prairie Rattlesnake
Crotalus viridis
926 observations
Prairie Lizard
Sceloporus consobrinus
847 observations
Painted Turtle
Chrysemys picta
801 observations
Pond Slider
Trachemys scripta
775 observations
Plains Garter Snake
Thamnophis radix
726 observations
North American Racer
Coluber constrictor
694 observations
Common Snapping Turtle
Chelydra serpentina
628 observations
Six-lined Racerunner
Aspidoscelis sexlineatus
608 observations · iNaturalist
Boreal Chorus Frog
Pseudacris maculata
497 observations
Western Tiger Salamander
Ambystoma mavortium
322 observations
Northern Leopard Frog
Lithobates pipiens
240 observations
Lined Snake
Tropidoclonion lineatum
171 observations
Common Watersnake
Nerodia sipedon
158 observations
Western Milksnake
Lampropeltis gentilis
148 observations
Common Garter Snake
Thamnophis sirtalis
116 observations
Spiny Softshell
Apalone spinifera
96 observations
Smooth Greensnake
Opheodrys vernalis
62 observations
Plains Spadefoot
Spea bombifrons
47 observations
Many-lined Skink
Plestiodon multivirgatus
40 observations
Greater Short-horned Lizard
Phrynosoma hernandesi
35 observations
Plains Hognose Snake
Heterodon nasicus
34 observations
Colorado Checkered Whiptail
Aspidoscelis neotesselatus
33 observations
Ornate Box Turtle
Terrapene ornata
24 observations
Western Earless Lizard
Holbrookia maculata
11 observations
Plains Black-headed Snake
Tantilla nigriceps
7 observations
Great Plains Toad
Anaxyrus cognatus
4 observations
False Map Turtle
Graptemys pseudogeographica
3 observations
Three-toed Box Turtle
Terrapene triunguis
3 observations
Northern Map Turtle
Graptemys geographica
2 observations
Brown Anole
Anolis sagrei
2 observations
Greenhouse Frog
Eleutherodactylus planirostris
1 observation
Pacific chorus frog
Pseudacris regilla
1 observation
Green Anole
Anolis carolinensis
1 observation
Common Bluetongue
Tiliqua scincoides
1 observation · iNaturalist
Yellow Mud Turtle
Kinosternon flavescens
1 observation
Red Cornsnake
Pantherophis guttatus
1 observation
Ouachita Map Turtle
Graptemys ouachitensis
1 observation
Red-footed Tortoise
Chelonoidis carbonarius
1 observation
Great Plains Ground Snake
Sonora episcopa
1 observation
Green Treefrog
Dryophytes cinereus
1 observation · iNaturalist
Reptiles & Amphibians in nearby places
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