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Northern green frog
Northern Green Frog - Tewksbury, NJ.jpg
Female Northern green frog
Scientific classification
Rana clamitans
R. c. melanota

Lithobates clamitans melanotus

The Northern green frog is a subspecies of the North American green frog. Its name is either Rana clamitans melanota, or Lithobates clamitans melanota.

It is moderately large. It is found in the northeast United States and some of eastern Canada. Its call sounds like a plucked banjo. It has a fold running from the top of its eyes down the side of its back. The bullfrog does not have these folds. It is normally found in swamps, marshes, and


Northern Green Frog, Sturgeon River
Top view, Temagami, Ontario
Green Frog, blue coloured, Fletcher Wildlife Garden
Blue coloured variation

Adult green frogs attain a snout-vent length (excluding the hind legs) 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.


The northern green frog dwells in marshes, swamps, ponds, lakes, springs, and other aquatic environment. It is active both day and night. muddy streams.

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