Reptiles & Amphibians of Big Bend National Park
The reptiles & amphibians most often spotted in Big Bend, ranked by recent research-grade observations.
6,276
recent observations
50
species listed
50
reptiles & amphibians
Naturalists have logged 6,276 research-grade observations across the 50 most-recorded species in Big Bend. The most frequently seen is the Greater Earless Lizard, with 931 recorded sightings.
Most-observed reptiles & amphibians in Big Bend
Greater Earless Lizard
Cophosaurus texanus
931 observations
Western Diamond-backed Rattlesnake
Crotalus atrox
470 observations
Rusty-rumped Whiptail
Aspidoscelis scalaris
347 observations · iNaturalist
Canyon Lizard
Sceloporus merriami
325 observations · iNaturalist
Marbled Whiptail
Aspidoscelis marmoratus
269 observations · iNaturalist
Common Side-blotched Lizard
Uta stansburiana
259 observations
Eastern Black-tailed Rattlesnake
Crotalus ornatus
227 observations · iNaturalist
Big Bend Slider
Trachemys gaigeae
214 observations
Red-spotted Toad
Anaxyrus punctatus
213 observations
Crevice Spiny Lizard
Sceloporus poinsettii
201 observations · iNaturalist
Texas Alligator Lizard
Gerrhonotus infernalis
178 observations
Trans-pecos Ratsnake
Bogertophis subocularis
177 observations
Southwestern Fence Lizard
Sceloporus cowlesi
161 observations · iNaturalist
Chihuahuan Nightsnake
Hypsiglena jani
151 observations · iNaturalist
Spiny Softshell
Apalone spinifera
139 observations
Common Checkered Whiptail
Aspidoscelis tesselatus
139 observations · iNaturalist
Texas Banded Gecko
Coleonyx brevis
123 observations · iNaturalist
Long-nosed Snake
Rhinocheilus lecontei
110 observations
Ornate Tree Lizard
Urosaurus ornatus
110 observations
Gopher Snake
Pituophis catenifer
101 observations
Eastern Collared Lizard
Crotaphytus collaris
98 observations
Rio Grande Leopard Frog
Lithobates berlandieri
97 observations · iNaturalist
Common Coachwhip
Masticophis flagellum
87 observations
Mediterranean House Gecko
Hemidactylus turcicus
78 observations
Twin-spotted Spiny Lizard
Sceloporus bimaculosus
74 observations · iNaturalist
Texas Toad
Anaxyrus speciosus
70 observations · iNaturalist
Couch's Spadefoot
Scaphiopus couchii
68 observations · iNaturalist
Black-necked Garter Snake
Thamnophis cyrtopsis
65 observations
Roundtail Horned Lizard
Phrynosoma modestum
62 observations · iNaturalist
Baird's Ratsnake
Pantherophis bairdi
56 observations · iNaturalist
Plain-bellied Watersnake
Nerodia erythrogaster
53 observations
Green Anole
Anolis carolinensis
52 observations
Big Bend Patch-nosed Snake
Salvadora deserticola
49 observations · iNaturalist
Great Plains Ground Snake
Sonora episcopa
45 observations · iNaturalist
Canyon Tree Frog
Dryophytes arenicolor
44 observations · iNaturalist
Chihuahuan Spotted Whiptail
Aspidoscelis exsanguis
39 observations · iNaturalist
Striped Whipsnake
Masticophis taeniatus
38 observations
Mojave Rattlesnake
Crotalus scutulatus
38 observations
Glossy Snake
Arizona elegans
35 observations
American Bullfrog
Lithobates catesbeianus
32 observations
Mountain Patch-nosed Snake
Salvadora grahamiae
28 observations · iNaturalist
Texas Lyre Snake
Trimorphodon vilkinsonii
28 observations · iNaturalist
Rock Rattlesnake
Crotalus lepidus
27 observations
Arizona Striped Whiptail
Aspidoscelis arizonae
26 observations · iNaturalist
Pond Slider
Trachemys scripta
25 observations
Green Treefrog
Dryophytes cinereus
25 observations · iNaturalist
Checkered Garter Snake
Thamnophis marcianus
23 observations · iNaturalist
Southwestern Blackhead Snake
Tantilla hobartsmithi
23 observations · iNaturalist
Reticulated Gecko
Coleonyx reticulatus
23 observations · iNaturalist
Great Plains Skink
Plestiodon obsoletus
23 observations
Reptiles & Amphibians in nearby places
Out spotting reptiles & amphibians in Big Bend?
Take Huck with you. Identify any reptiles & amphibian you find in seconds and build your collection.
Get HuckLove reptiles & amphibians? Get Huck field notes
Spotting tips, new species, and the best of what people are finding in the wild - straight to your inbox.