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Texas Spiny Lizard vs. Northern Rose-bellied Lizard

They live together in southern Texas brush; young Texas Spiny Lizards are often taken for Rose-bellied Lizards. A: Wavy dark crossbars on grey, no pale stripes in the Texas Spiny Lizard; two pale stripes down the back with a row of dark spots between in the Northern Rose-bellied Lizard. B: No dark spot above the front leg in the Texas Spiny Lizard; a dark spot above the front leg in the Northern Rose-bellied Lizard. C: Big: 7 to 11 in in the Texas Spiny Lizard; small: 4 to 5.5 in in the Northern Rose-bellied Lizard. Rose-bellied males have pink belly patches edged blue; Texas Spiny males have blue belly patches.

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Texas Spiny Lizard

Sceloporus olivaceus

Northern Rose-bellied Lizard

Sceloporus marmoratus
Texas Spiny Lizard vs. Northern Rose-bellied 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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