Reptiles & Amphibians of Denver, Colorado
The reptiles & amphibians most often spotted near Denver, ranked by recent research-grade observations.
15,584
recent observations
42
species listed
42
reptiles & amphibians
Naturalists have logged 15,584 research-grade observations across the 42 most-recorded species near Denver. The most frequently seen is the Gopher Snake, with 2,229 recorded sightings.
Most-observed reptiles & amphibians near Denver
Gopher Snake
Pituophis catenifer
2,229 observations
Western Terrestrial Garter Snake
Thamnophis elegans
2,224 observations
Woodhouse's Toad
Anaxyrus woodhousii
1,998 observations
American Bullfrog
Lithobates catesbeianus
1,220 observations
Prairie Rattlesnake
Crotalus viridis
910 observations
Prairie Lizard
Sceloporus consobrinus
815 observations · iNaturalist
Painted Turtle
Chrysemys picta
784 observations
Pond Slider
Trachemys scripta
766 observations
Plains Garter Snake
Thamnophis radix
716 observations
North American Racer
Coluber constrictor
682 observations
Common Snapping Turtle
Chelydra serpentina
613 observations
Six-lined Racerunner
Aspidoscelis sexlineatus
594 observations · iNaturalist
Boreal Chorus Frog
Pseudacris maculata
495 observations
Western Tiger Salamander
Ambystoma mavortium
319 observations · iNaturalist
Northern Leopard Frog
Lithobates pipiens
235 observations
Lined Snake
Tropidoclonion lineatum
167 observations
Common Watersnake
Nerodia sipedon
155 observations
Western Milksnake
Lampropeltis gentilis
147 observations · iNaturalist
Common Garter Snake
Thamnophis sirtalis
114 observations
Spiny Softshell
Apalone spinifera
94 observations
Smooth Greensnake
Opheodrys vernalis
62 observations
Plains Spadefoot
Spea bombifrons
47 observations
Many-lined Skink
Plestiodon multivirgatus
38 observations
Greater Short-horned Lizard
Phrynosoma hernandesi
34 observations
Plains Hognose Snake
Heterodon nasicus
32 observations
Colorado Checkered Whiptail
Aspidoscelis neotesselatus
30 observations · iNaturalist
Ornate Box Turtle
Terrapene ornata
24 observations
Western Earless Lizard
Holbrookia maculata
11 observations
Plains Black-headed Snake
Tantilla nigriceps
7 observations · iNaturalist
Great Plains Toad
Anaxyrus cognatus
4 observations
False Map Turtle
Graptemys pseudogeographica
3 observations
Three-toed Box Turtle
Terrapene triunguis
3 observations · iNaturalist
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
Red Cornsnake
Pantherophis guttatus
1 observation
Ouachita Map Turtle
Graptemys ouachitensis
1 observation · iNaturalist
Great Plains Ground Snake
Sonora episcopa
1 observation · iNaturalist
Green Treefrog
Dryophytes cinereus
1 observation · iNaturalist
Reptiles & Amphibians in nearby places
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