Cascades Frog vs. Northern Red-legged Frog

Both live in the Oregon Cascades; Cascades Frogs mostly above 2,500 ft. A: Sharp, inky-black spots in the Cascades Frog; small faint dark flecks in the Northern Red-legged Frog. B: Pale yellowish underneath, not red in the Cascades Frog; red under the hind legs in the Northern Red-legged Frog. C: Pale, distinct folds in the Cascades Frog; folds present, less contrasting in the Northern Red-legged Frog.

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

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