Mountain Chorus Frog vs. Western Chorus Frog

On the back, a Mountain Chorus Frog has two dark curved stripes like reversed brackets )( — sometimes joining into an X or H — and no stripe down the middle. A Western Chorus Frog has three straight dark stripes or rows of broken spots. On the face, a Mountain Chorus Frog has a dark triangle between the eyes and a clean white line on the upper lip; a Western Chorus Frog has a dark spot between the eyes and a white line along the lip below a dark stripe that runs through the eye and down the side.

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

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