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The Green Frog is a large, true frog with large, distinct tympanum and prominent dorsolateral ridges. It may be green, bronze or brown, or a combination but is typically green on the upper lip. The belly is white with darker lines or spots. There may be some irregular spotting on the back. It is distinguished from other frogs in that the dorsolateral ridges run only partway down the back and do not reach the groin. The hind legs have dark bars. Males have a bright yellow throat. Maximum adult size is 10 cm.