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Reptiles & Amphibians of Arizona

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

158,459
recent observations
50
species listed
50
reptiles & amphibians

Naturalists have logged 158,459 research-grade observations across the 50 most-recorded species in Arizona. The most frequently seen is the Common Side-blotched Lizard, with 12,151 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
12,151 observations
Western Diamond-backed Rattlesnake
Crotalus atrox
11,856 observations
Ornate Tree Lizard
Urosaurus ornatus
11,395 observations
Desert Spiny Lizard
Sceloporus magister
9,993 observations
Gopher Snake
Pituophis catenifer
6,012 observations
Yarrow's Spiny Lizard
Sceloporus jarrovii
5,844 observations
Western Whiptail
Aspidoscelis tigris
5,209 observations
Zebra-tailed Lizard
Callisaurus draconoides
5,149 observations
Red-spotted Toad
Anaxyrus punctatus
4,701 observations
Sonoran Desert Toad
Incilius alvarius
4,685 observations
Plateau Fence Lizard
Sceloporus tristichus
4,488 observations
Greater Short-horned Lizard
Phrynosoma hernandesi
4,389 observations
Clark's Spiny Lizard
Sceloporus clarkii
4,023 observations
Couch's Spadefoot
Scaphiopus couchii
3,577 observations
Western Black-tailed Rattlesnake
Crotalus molossus
3,320 observations
Canyon Tree Frog
Dryophytes arenicolor
3,178 observations
Greater Earless Lizard
Cophosaurus texanus
3,078 observations
Western Banded Gecko
Coleonyx variegatus
2,969 observations
Pond Slider
Trachemys scripta
2,934 observations
Mojave Rattlesnake
Crotalus scutulatus
2,907 observations
Sonoran Spotted Whiptail
Aspidoscelis sonorae
2,795 observations
Gila Monster
Heloderma suspectum
2,731 observations
Common Chuckwalla
Sauromalus ater
2,540 observations
Regal Horned Lizard
Phrynosoma solare
2,490 observations
American Bullfrog
Lithobates catesbeianus
2,407 observations
Long-nosed Snake
Rhinocheilus lecontei
2,111 observations
Mediterranean House Gecko
Hemidactylus turcicus
2,018 observations
Sonoran Desert Tortoise
Gopherus morafkai
1,814 observations
Desert Coachwhip
Masticophis piceus
1,651 observations · iNaturalist
Desert Iguana
Dipsosaurus dorsalis
1,549 observations
California King Snake
Lampropeltis californiae
1,538 observations
Woodhouse's Toad
Anaxyrus woodhousii
1,522 observations
Eastern Collared Lizard
Crotaphytus collaris
1,518 observations
Sidewinder
Crotalus cerastes
1,507 observations
Great Plains Toad
Anaxyrus cognatus
1,497 observations
San Esteban Island × Sonoran Spiny-tailed Iguana
Ctenosaura conspicuosa × macrolopha
1,380 observations · iNaturalist
Madrean Alligator Lizard
Elgaria kingii
1,378 observations
Elegant Earless Lizard
Holbrookia elegans
1,360 observations
Black-necked Garter Snake
Thamnophis cyrtopsis
1,297 observations
Desert Nightsnake
Hypsiglena chlorophaea
1,146 observations
Western Terrestrial Garter Snake
Thamnophis elegans
1,095 observations
Striped Plateau Lizard
Sceloporus virgatus
1,083 observations
Desert Grassland Whiptail
Aspidoscelis uniparens
1,063 observations
Southwestern Fence Lizard
Sceloporus cowlesi
1,059 observations
Tiger Rattlesnake
Crotalus tigris
1,043 observations
Ornate Box Turtle
Terrapene ornata
1,039 observations
Chiricahua Leopard Frog
Lithobates chiricahuensis
1,026 observations
Sonoran Whipsnake
Masticophis bilineatus
1,005 observations
Sonoran Mud Turtle
Kinosternon sonoriense
1,004 observations
Western Patch-nosed Snake
Salvadora hexalepis
935 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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