Reptiles & Amphibians of Colorado
The reptiles & amphibians most often spotted in Colorado, ranked by recent research-grade observations.
56,165
recent observations
50
species listed
50
reptiles & amphibians
Naturalists have logged 56,165 research-grade observations across the 50 most-recorded species in Colorado. The most frequently seen is the Western Terrestrial Garter Snake, with 6,312 recorded sightings.
Most-observed reptiles & amphibians in Colorado
Western Terrestrial Garter Snake
Thamnophis elegans
6,312 observations
Woodhouse's Toad
Anaxyrus woodhousii
5,908 observations
Gopher Snake
Pituophis catenifer
5,846 observations
Prairie Lizard
Sceloporus consobrinus
3,785 observations · iNaturalist
Prairie Rattlesnake
Crotalus viridis
3,376 observations
American Bullfrog
Lithobates catesbeianus
2,437 observations
Plateau Fence Lizard
Sceloporus tristichus
1,866 observations · iNaturalist
Plains Garter Snake
Thamnophis radix
1,816 observations
Western Tiger Salamander
Ambystoma mavortium
1,744 observations · iNaturalist
North American Racer
Coluber constrictor
1,490 observations
Eastern Collared Lizard
Crotaphytus collaris
1,433 observations
Painted Turtle
Chrysemys picta
1,388 observations
Boreal Chorus Frog
Pseudacris maculata
1,356 observations
Pond Slider
Trachemys scripta
1,237 observations
Greater Short-horned Lizard
Phrynosoma hernandesi
1,219 observations
Six-lined Racerunner
Aspidoscelis sexlineatus
1,105 observations · iNaturalist
Common Snapping Turtle
Chelydra serpentina
1,071 observations
Common Side-blotched Lizard
Uta stansburiana
1,013 observations
Northern Leopard Frog
Lithobates pipiens
842 observations
Common Sagebrush Lizard
Sceloporus graciosus
708 observations
Colorado Checkered Whiptail
Aspidoscelis neotesselatus
688 observations · iNaturalist
Western Earless Lizard
Holbrookia maculata
578 observations
Plateau Striped Whiptail
Aspidoscelis velox
557 observations · iNaturalist
Common Coachwhip
Masticophis flagellum
557 observations
Ornate Box Turtle
Terrapene ornata
553 observations
Lined Snake
Tropidoclonion lineatum
526 observations
Texas Horned Lizard
Phrynosoma cornutum
488 observations
Couch's Spadefoot
Scaphiopus couchii
481 observations · iNaturalist
Western Whiptail
Aspidoscelis tigris
465 observations
Mexican Spadefoot
Spea multiplicata
403 observations
Plains Spadefoot
Spea bombifrons
400 observations
Western Milksnake
Lampropeltis gentilis
381 observations · iNaturalist
Smooth Greensnake
Opheodrys vernalis
350 observations
Common Watersnake
Nerodia sipedon
348 observations
Glossy Snake
Arizona elegans
333 observations
Plains Hognose Snake
Heterodon nasicus
331 observations
Common Garter Snake
Thamnophis sirtalis
330 observations
Plains Black-headed Snake
Tantilla nigriceps
320 observations · iNaturalist
Plains Leopard Frog
Lithobates blairi
288 observations
Great Plains Toad
Anaxyrus cognatus
241 observations
Ornate Tree Lizard
Urosaurus ornatus
230 observations
Spiny Softshell
Apalone spinifera
209 observations
Great Plains Ratsnake
Pantherophis emoryi
197 observations
Great Plains Ground Snake
Sonora episcopa
179 observations · iNaturalist
Chihuahuan Green Toad
Anaxyrus debilis
156 observations
Red-spotted Toad
Anaxyrus punctatus
154 observations
Common Checkered Whiptail
Aspidoscelis tesselatus
135 observations · iNaturalist
Ring-necked Snake
Diadophis punctatus
113 observations
Long-nosed Snake
Rhinocheilus lecontei
113 observations
Many-lined Skink
Plestiodon multivirgatus
109 observations
Reptiles & Amphibians in nearby places
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