Dryophytes gratiosus is the largest native tree frog in the United States, and its name comes from its loud and explosive croak. The head-body length measures 5 to 7 cm (2.0 to 2.8 in). Its color varies, but it is easily identified by the distinctive dark, circular patterns on its dorsum. Individuals might be brilliant or dull green, brown, yellowish, or gray in color, with little grey or green-yellow dots. It has distinctive, spherical toe pads, and the male possesses a huge vocal sac. Dryophytes gratiosus has unique skin compared to other American frog species.
Its skin is neither rough and warty nor smooth, but thick and leathery. Its skin can also change colors in response to illumination, time of day, temperature, and surroundings. Color changes can occur quickly, and patches may emerge and disappear over time. Dryophytes gratiosus’ eyes are brown, gold, and black.
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