Reptiles & Amphibians of Colorado
The reptiles & amphibians most often spotted in Colorado, ranked by recent research-grade observations.
58,592
recent observations
50
species listed
50
reptiles & amphibians
Naturalists have logged 58,592 research-grade observations across the 50 most-recorded species in Colorado. The most frequently seen is the Western Terrestrial Garter Snake, with 6,606 recorded sightings.
Most-observed reptiles & amphibians in Colorado
Western Terrestrial Garter Snake
Thamnophis elegans
6,606 observations
Woodhouse's Toad
Anaxyrus woodhousii
6,169 observations
Gopher Snake
Pituophis catenifer
6,009 observations
Prairie Lizard
Sceloporus consobrinus
4,090 observations
Prairie Rattlesnake
Crotalus viridis
3,490 observations
American Bullfrog
Lithobates catesbeianus
2,597 observations
Plateau Fence Lizard
Sceloporus tristichus
1,981 observations
Plains Garter Snake
Thamnophis radix
1,878 observations
Western Tiger Salamander
Ambystoma mavortium
1,817 observations
North American Racer
Coluber constrictor
1,535 observations
Eastern Collared Lizard
Crotaphytus collaris
1,484 observations
Painted Turtle
Chrysemys picta
1,439 observations
Boreal Chorus Frog
Pseudacris maculata
1,390 observations
Greater Short-horned Lizard
Phrynosoma hernandesi
1,271 observations
Pond Slider
Trachemys scripta
1,262 observations
Six-lined Racerunner
Aspidoscelis sexlineatus
1,158 observations · iNaturalist
Common Snapping Turtle
Chelydra serpentina
1,106 observations
Common Side-blotched Lizard
Uta stansburiana
1,073 observations
Northern Leopard Frog
Lithobates pipiens
888 observations
Common Sagebrush Lizard
Sceloporus graciosus
732 observations
Colorado Checkered Whiptail
Aspidoscelis neotesselatus
716 observations
Plateau Striped Whiptail
Aspidoscelis velox
604 observations
Western Earless Lizard
Holbrookia maculata
597 observations
Ornate Box Turtle
Terrapene ornata
586 observations
Common Coachwhip
Masticophis flagellum
580 observations
Lined Snake
Tropidoclonion lineatum
537 observations
Couch's Spadefoot
Scaphiopus couchii
497 observations
Texas Horned Lizard
Phrynosoma cornutum
496 observations
Western Whiptail
Aspidoscelis tigris
475 observations
Mexican Spadefoot
Spea multiplicata
433 observations
Plains Spadefoot
Spea bombifrons
411 observations
Western Milksnake
Lampropeltis gentilis
388 observations
Common Watersnake
Nerodia sipedon
364 observations
Smooth Greensnake
Opheodrys vernalis
363 observations
Common Garter Snake
Thamnophis sirtalis
343 observations
Plains Hognose Snake
Heterodon nasicus
342 observations
Glossy Snake
Arizona elegans
341 observations
Plains Black-headed Snake
Tantilla nigriceps
324 observations
Plains Leopard Frog
Lithobates blairi
322 observations
Great Plains Toad
Anaxyrus cognatus
250 observations
Ornate Tree Lizard
Urosaurus ornatus
236 observations
Spiny Softshell
Apalone spinifera
224 observations
Great Plains Ratsnake
Pantherophis emoryi
199 observations
Great Plains Ground Snake
Sonora episcopa
185 observations
Red-spotted Toad
Anaxyrus punctatus
159 observations
Chihuahuan Green Toad
Anaxyrus debilis
156 observations
Common Checkered Whiptail
Aspidoscelis tesselatus
141 observations
Ring-necked Snake
Diadophis punctatus
120 observations
Many-lined Skink
Plestiodon multivirgatus
115 observations
Long-nosed Snake
Rhinocheilus lecontei
113 observations
Reptiles & Amphibians in nearby places
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