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Foothill Yellow-legged Frog vs. Cascades Frog

Their ranges meet in the southern Oregon Cascades and northern California. A: A short, blunt head and snout in the Foothill Yellow-legged Frog; a longer, more pointed head and snout in the Cascades Frog. B: Rough, pebbly skin; folds faint in the Foothill Yellow-legged Frog; smooth skin; pale folds in the Cascades Frog. C: Mottled like stream stones in the Foothill Yellow-legged Frog; sharp inky-black spots in the Cascades Frog. D: A pale triangle on the snout in the Foothill Yellow-legged Frog; a dark mask and pale jaw stripe in the Cascades Frog.

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Foothill Yellow-legged Frog

Rana boylii

Cascades Frog

Rana cascadae
Foothill Yellow-legged Frog vs. Cascades Frog: comparison sheet with the differences marked

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

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