Reptiles & Amphibians of Colorado
The reptiles & amphibians most often spotted in Colorado, ranked by recent research-grade observations.
57,496
recent observations
50
species listed
50
reptiles & amphibians
Naturalists have logged 57,496 research-grade observations across the 50 most-recorded species in Colorado. The most frequently seen is the Western Terrestrial Garter Snake, with 6,486 recorded sightings.
Most-observed reptiles & amphibians in Colorado
Western Terrestrial Garter Snake
Thamnophis elegans
6,486 observations
Woodhouse's Toad
Anaxyrus woodhousii
6,089 observations
Gopher Snake
Pituophis catenifer
5,912 observations
Prairie Lizard
Sceloporus consobrinus
3,979 observations · iNaturalist
Prairie Rattlesnake
Crotalus viridis
3,424 observations
American Bullfrog
Lithobates catesbeianus
2,510 observations
Plateau Fence Lizard
Sceloporus tristichus
1,920 observations · iNaturalist
Plains Garter Snake
Thamnophis radix
1,856 observations
Western Tiger Salamander
Ambystoma mavortium
1,792 observations · iNaturalist
North American Racer
Coluber constrictor
1,513 observations
Eastern Collared Lizard
Crotaphytus collaris
1,460 observations
Painted Turtle
Chrysemys picta
1,409 observations
Boreal Chorus Frog
Pseudacris maculata
1,372 observations
Pond Slider
Trachemys scripta
1,251 observations
Greater Short-horned Lizard
Phrynosoma hernandesi
1,245 observations
Six-lined Racerunner
Aspidoscelis sexlineatus
1,134 observations · iNaturalist
Common Snapping Turtle
Chelydra serpentina
1,080 observations
Common Side-blotched Lizard
Uta stansburiana
1,043 observations
Northern Leopard Frog
Lithobates pipiens
866 observations
Common Sagebrush Lizard
Sceloporus graciosus
726 observations
Colorado Checkered Whiptail
Aspidoscelis neotesselatus
699 observations · iNaturalist
Western Earless Lizard
Holbrookia maculata
591 observations
Plateau Striped Whiptail
Aspidoscelis velox
591 observations · iNaturalist
Common Coachwhip
Masticophis flagellum
566 observations
Ornate Box Turtle
Terrapene ornata
561 observations
Lined Snake
Tropidoclonion lineatum
529 observations
Couch's Spadefoot
Scaphiopus couchii
492 observations · iNaturalist
Texas Horned Lizard
Phrynosoma cornutum
490 observations
Western Whiptail
Aspidoscelis tigris
473 observations
Mexican Spadefoot
Spea multiplicata
428 observations
Plains Spadefoot
Spea bombifrons
404 observations
Western Milksnake
Lampropeltis gentilis
382 observations · iNaturalist
Common Watersnake
Nerodia sipedon
358 observations
Smooth Greensnake
Opheodrys vernalis
358 observations
Glossy Snake
Arizona elegans
340 observations
Common Garter Snake
Thamnophis sirtalis
335 observations
Plains Hognose Snake
Heterodon nasicus
332 observations
Plains Black-headed Snake
Tantilla nigriceps
322 observations · iNaturalist
Plains Leopard Frog
Lithobates blairi
312 observations
Great Plains Toad
Anaxyrus cognatus
246 observations
Ornate Tree Lizard
Urosaurus ornatus
231 observations
Spiny Softshell
Apalone spinifera
219 observations
Great Plains Ratsnake
Pantherophis emoryi
197 observations
Great Plains Ground Snake
Sonora episcopa
182 observations · iNaturalist
Red-spotted Toad
Anaxyrus punctatus
159 observations
Chihuahuan Green Toad
Anaxyrus debilis
156 observations
Common Checkered Whiptail
Aspidoscelis tesselatus
137 observations · iNaturalist
Ring-necked Snake
Diadophis punctatus
115 observations
Long-nosed Snake
Rhinocheilus lecontei
113 observations
Many-lined Skink
Plestiodon multivirgatus
111 observations
Reptiles & Amphibians in nearby places
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