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northern green frog
The northern green frog (''Rana clamitans melanota''〔(Green Frog ), Metro Toronto Zoo〕) is a subspecies of the green frog, ''Rana clamitans''. It is native to the northeastern North America and has been introduced to British Columbia.〔(Green Frog ), Gov. of British Columbia, Ministry of the Environment〕 Its mating call sounds like the single note of a plucked banjo. It is also quite common in the pet trade.
==Description==
Adult green frogs attain a snout-vent length of 5.5 to 9 cm (2.25 to 3.5 in). The ground color is green or brownish-green. Where the green back and sides fade into the white belly and chest, some black mottling may occur. Some individuals may have light-gray mottling on the chest. The most prominent feature is the pair of dorsolateral folds extending from behind the tympanic membranes to just beyond halfway down the back. The male’s single vocal sac is internal. When it calls, the throat swells, but the vocal sac is not visible.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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