Reptiles & Amphibians of Arizona
The reptiles & amphibians most often spotted in Arizona, ranked by recent research-grade observations.
Most-observed reptiles & amphibians in Arizona
Common Side-blotched Lizard
Uta stansburiana
11,383 observations
Ornate Tree Lizard
Urosaurus ornatus
10,841 observations
Western Diamond-backed Rattlesnake
Crotalus atrox
10,356 observations
Desert Spiny Lizard
Sceloporus magister
9,348 observations
Gopher Snake
Pituophis catenifer
5,579 observations
Yarrow's Spiny Lizard
Sceloporus jarrovii
5,336 observations
Zebra-tailed Lizard
Callisaurus draconoides
4,869 observations
Western Whiptail
Aspidoscelis tigris
4,862 observations
Plateau Fence Lizard
Sceloporus tristichus
4,126 observations · iNaturalist
Red-spotted Toad
Anaxyrus punctatus
4,110 observations
Sonoran Desert Toad
Incilius alvarius
4,070 observations
Greater Short-horned Lizard
Phrynosoma hernandesi
3,988 observations
Clark's Spiny Lizard
Sceloporus clarkii
3,735 observations
Couch's Spadefoot
Scaphiopus couchii
3,084 observations · iNaturalist
Canyon Tree Frog
Dryophytes arenicolor
3,025 observations · iNaturalist
Greater Earless Lizard
Cophosaurus texanus
2,918 observations
Western Black-tailed Rattlesnake
Crotalus molossus
2,879 observations
Pond Slider
Trachemys scripta
2,818 observations
Western Banded Gecko
Coleonyx variegatus
2,647 observations
Mojave Rattlesnake
Crotalus scutulatus
2,572 observations
Sonoran Spotted Whiptail
Aspidoscelis sonorae
2,552 observations · iNaturalist
Gila Monster
Heloderma suspectum
2,544 observations
Common Chuckwalla
Sauromalus ater
2,425 observations
Regal Horned Lizard
Phrynosoma solare
2,284 observations · iNaturalist
American Bullfrog
Lithobates catesbeianus
2,226 observations
Long-nosed Snake
Rhinocheilus lecontei
1,912 observations
Mediterranean House Gecko
Hemidactylus turcicus
1,809 observations
Common Coachwhip
Masticophis flagellum
1,668 observations
Sonoran Desert Tortoise
Gopherus morafkai
1,631 observations · iNaturalist
Desert Iguana
Dipsosaurus dorsalis
1,485 observations
Eastern Collared Lizard
Crotaphytus collaris
1,432 observations
Woodhouse's Toad
Anaxyrus woodhousii
1,426 observations
California King Snake
Lampropeltis californiae
1,420 observations
Sidewinder
Crotalus cerastes
1,418 observations
Great Plains Toad
Anaxyrus cognatus
1,333 observations
San Esteban Island × Sonoran Spiny-tailed Iguana
Ctenosaura conspicuosa × macrolopha
1,283 observations · iNaturalist
Elegant Earless Lizard
Holbrookia elegans
1,231 observations · iNaturalist
Madrean Alligator Lizard
Elgaria kingii
1,225 observations · iNaturalist
Black-necked Garter Snake
Thamnophis cyrtopsis
1,146 observations
Desert Nightsnake
Hypsiglena chlorophaea
1,032 observations · iNaturalist
Western Terrestrial Garter Snake
Thamnophis elegans
1,018 observations
Desert Grassland Whiptail
Aspidoscelis uniparens
989 observations
Striped Plateau Lizard
Sceloporus virgatus
976 observations · iNaturalist
Southwestern Fence Lizard
Sceloporus cowlesi
966 observations · iNaturalist
Sonoran Mud Turtle
Kinosternon sonoriense
961 observations
Chiricahua Leopard Frog
Lithobates chiricahuensis
925 observations · iNaturalist
Sonoran Whipsnake
Masticophis bilineatus
914 observations · iNaturalist
Western Patch-nosed Snake
Salvadora hexalepis
896 observations
Tiger Rattlesnake
Crotalus tigris
893 observations
Ornate Box Turtle
Terrapene ornata
890 observations