Specimen of Polka-Dot Treefrog <i>Boana Punctata</i> (IMAGE)
Caption
Specimen of�polka-dot treefrog Boana�punctata�active at night in Bella Vista, Corrientes, Argentina. During the day the animals assume a resting position on the leaves, matching their color, a phenomenon largely aided by a biliverdin-binding protein of the serpin family. At night, the frog's color changes, with red, yellow and white patches appearing.
Credit
Image credit: Andr�s E. Brunetti.
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