Columbia Spotted Frog vs. Northern Leopard Frog

Both are spotted pond frogs with a ridge along each side of the back, and both live in Wyoming's northwest. A: the Columbia Spotted Frog's spots are irregular and blotchy, often with pale centres; the Leopard Frog's are rounder and neatly ringed with a pale border (halo). B: the Leopard Frog's ridges are bold and pale, running straight to the hip; the Columbia Spotted Frog's are faint. C: the Columbia Spotted Frog is salmon-orange under the hind legs and belly; the Leopard Frog is white underneath. The Columbia Spotted Frog's eyes are turned slightly upward.

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

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