Southern Alligator Lizard vs. Northern Alligator Lizard

Two alligator lizards that live together in the Willamette Valley, the Columbia Gorge and the southwest. A: Pale yellow eyes in the Southern Alligator Lizard; dark brown eyes in the Northern Alligator Lizard. B: Bold dark crossbands, flecked with white in the Southern Alligator Lizard; duller; crossbars or spots, often faint in the Northern Alligator Lizard. C: Dark lines run down the middle of each scale row in the Southern Alligator Lizard; faint dark lines run between the scale rows in the Northern Alligator Lizard. The Southern is larger (to 7 in head and body vs 5.25 in).

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

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