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Reptiles & Amphibians of Arizona

The reptiles & amphibians most often spotted in Arizona, ranked by recent research-grade observations.

158,959
recent observations
50
species listed
50
reptiles & amphibians

Naturalists have logged 158,959 research-grade observations across the 50 most-recorded species in Arizona. The most frequently seen is the Common Side-blotched Lizard, with 12,187 recorded sightings.

Rarer finds confirmed in Arizona include Regal Horned Lizard and Sonoran Desert Tortoise - uncommon enough that a sighting is worth logging.

Regal Horned LizardSonoran Desert Tortoise

Most-observed reptiles & amphibians in Arizona

Common Side-blotched Lizard
Uta stansburiana
12,187 observations
Western Diamond-backed Rattlesnake
Crotalus atrox
11,894 observations
Ornate Tree Lizard
Urosaurus ornatus
11,423 observations
Desert Spiny Lizard
Sceloporus magister
10,013 observations
Gopher Snake
Pituophis catenifer
6,027 observations
Yarrow's Spiny Lizard
Sceloporus jarrovii
5,854 observations
Western Whiptail
Aspidoscelis tigris
5,219 observations
Zebra-tailed Lizard
Callisaurus draconoides
5,153 observations
Red-spotted Toad
Anaxyrus punctatus
4,713 observations
Sonoran Desert Toad
Incilius alvarius
4,685 observations
Plateau Fence Lizard
Sceloporus tristichus
4,512 observations
Greater Short-horned Lizard
Phrynosoma hernandesi
4,399 observations
Clark's Spiny Lizard
Sceloporus clarkii
4,036 observations
Couch's Spadefoot
Scaphiopus couchii
3,584 observations
Western Black-tailed Rattlesnake
Crotalus molossus
3,329 observations
Canyon Tree Frog
Dryophytes arenicolor
3,180 observations
Greater Earless Lizard
Cophosaurus texanus
3,085 observations
Western Banded Gecko
Coleonyx variegatus
2,984 observations
Pond Slider
Trachemys scripta
2,952 observations
Mojave Rattlesnake
Crotalus scutulatus
2,910 observations
Sonoran Spotted Whiptail
Aspidoscelis sonorae
2,809 observations
Gila Monster
Heloderma suspectum
2,740 observations
Common Chuckwalla
Sauromalus ater
2,543 observations
Regal Horned Lizard
Phrynosoma solare
2,494 observations
American Bullfrog
Lithobates catesbeianus
2,421 observations
Long-nosed Snake
Rhinocheilus lecontei
2,112 observations
Mediterranean House Gecko
Hemidactylus turcicus
2,031 observations
Sonoran Desert Tortoise
Gopherus morafkai
1,894 observations
Desert Coachwhip
Masticophis piceus
1,653 observations · iNaturalist
Desert Iguana
Dipsosaurus dorsalis
1,552 observations
California King Snake
Lampropeltis californiae
1,542 observations
Woodhouse's Toad
Anaxyrus woodhousii
1,523 observations
Eastern Collared Lizard
Crotaphytus collaris
1,519 observations
Sidewinder
Crotalus cerastes
1,509 observations
Great Plains Toad
Anaxyrus cognatus
1,503 observations
San Esteban Island × Sonoran Spiny-tailed Iguana
Ctenosaura conspicuosa × macrolopha
1,389 observations · iNaturalist
Madrean Alligator Lizard
Elgaria kingii
1,381 observations
Elegant Earless Lizard
Holbrookia elegans
1,363 observations
Black-necked Garter Snake
Thamnophis cyrtopsis
1,299 observations
Desert Nightsnake
Hypsiglena chlorophaea
1,162 observations
Western Terrestrial Garter Snake
Thamnophis elegans
1,098 observations
Striped Plateau Lizard
Sceloporus virgatus
1,084 observations
Desert Grassland Whiptail
Aspidoscelis uniparens
1,064 observations
Southwestern Fence Lizard
Sceloporus cowlesi
1,062 observations
Tiger Rattlesnake
Crotalus tigris
1,044 observations
Ornate Box Turtle
Terrapene ornata
1,043 observations
Chiricahua Leopard Frog
Lithobates chiricahuensis
1,028 observations
Sonoran Mud Turtle
Kinosternon sonoriense
1,011 observations
Sonoran Whipsnake
Masticophis bilineatus
1,006 observations
Western Patch-nosed Snake
Salvadora hexalepis
941 observations

Built from recent research-grade iNaturalist observations. Identifications are community-sourced and may occasionally be wrong, and the ranking reflects where people record and photograph wildlife, so a species seen often here is not necessarily rare elsewhere. Some plants and animals are only out in certain seasons. Treat this as a lively snapshot of what people are finding, not a formal checklist.

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