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Clark's Spiny Lizard vs. Southwestern Fence Lizard

Both live on rocks, logs and trees in southeastern Arizona; a young Clark's Spiny Lizard is the size of an adult fence lizard. A: Black bracelet-like bands across the forearms in the Clark's Spiny Lizard; no bold wrist bands in the Southwestern Fence Lizard. B: Young: grey with soft brown or grey crossbars and no pale stripes in the Clark's Spiny Lizard; two pale stripes on the back with a grey stripe between in the Southwestern Fence Lizard. C: Big: to 5.6 in head and body in the Clark's Spiny Lizard; small: to 3 in head and body in the Southwestern Fence Lizard.

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Clark's Spiny Lizard

Sceloporus clarkii

Southwestern Fence Lizard

Sceloporus cowlesi
Clark's Spiny Lizard vs. Southwestern Fence Lizard: comparison sheet with the differences marked

Photographs via iNaturalist under Creative Commons licences; the photographers are credited on the sheet.

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