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Southwestern Fence Lizard vs. Ornate Tree Lizard

Both are common small grey-brown lizards on rocks, logs and trees across eastern and southern Arizona, and both have blue belly patches in males. A: Big, keeled, overlapping spiny scales all over the back in the Southwestern Fence Lizard; mostly tiny granular scales, with two narrow strips of bigger keeled scales in the Ornate Tree Lizard. B: No fold of skin in the Southwestern Fence Lizard; a loose fold of skin along each lower side in the Ornate Tree Lizard. C: Bigger: to 3 in (7.6 cm) head and body in the Southwestern Fence Lizard; smaller and slimmer: to 2.3 in (5.9 cm) head and body in the Ornate Tree Lizard.

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Southwestern Fence Lizard

Sceloporus cowlesi

Ornate Tree Lizard

Urosaurus ornatus
Southwestern Fence Lizard vs. Ornate Tree 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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