LeighAnn did her research. Gray tree frogs are medium-sized tree frogs native to eastern North America. They are fairly common in much of their range near small bodies of water, and are often encountered by humans during the breeding season in spring. There are two separate species of gray tree frog: Hyla chrysoscelis and Hyla versicolor, both of which look identical and can only easily be told apart by their call. In captivity they both require the same care. Adults reach a size of around 2 inches (5 cm). As their common name suggests, most are predominantly gray, although their ventral side is a light white, and on the inside of their hind legs there are two bright orange or yellow flash marks. Gray tree frogs have the ability to change color depending on temperature, humidity, light intensity, and the color of their surroundings. Most are able to change from bright green, to pale white, to dark brown, although most of the time they remain gray. Juveniles are generally green in color and develop their gray adult coloration as they mature.
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