Hyla versicolor, commonly known as the gray tree frog or eastern gray tree frog, is an amphibian that is defined as the “chameleon of the frog world” (Craighead, 2004, p. 1) due to its its ability to change color. “This frog was once thought to be the same species as Cope's gray tree frog.” They are distinguished only by their calls and the fact that the Gray Tree Frog is diploid while the Gray Tree Frog is tetraploid (NPWRC, 2004). The gray tree frog is classified as follows: Kingdom: Animalia Phylum: Chordata Class: Lissamphibia Order: Anura Family: Hylidae Genus: Hyla Species: H. versicolor The gray tree frog is about two inches long. Its head is short and broad and its body corpulent (Dickerson, 1969). With a white belly, a white rectangular spot under both eyes, yellowish-orange markings on the inside of its skin legs, and black spots including one that looks like an irregularly shaped star on its back, this frog is very colorful and exotic. Depending on the frog's environment and stress level, its colors may change (Centralpets.com, 2004). H. versicolor can actually be any shade of brown, gray, green, or even light yellow or white. Temperature and light intensity also affect the frog's colors. When there is bright light and higher temperature perhaps it will be a yellowish white with almost no markings. When dark and moist it can be a dark stone gray with dark spots (Dickerson, 1969). The back of the frog is usually covered with coarse tubercles. Its toes are finely webbed while the hind foot is more developed. Large discs exist on the fingers and toes to facilitate climbing and attachment to objects (Dickerson, 1969). Male and female gray tree frogs are very similar. They can be distinguished because the male has a dark lower part of the throat. Female ears are also smaller than male ears (Dickerson, 1969). The gray tree frog can be found everywhere from southern Ontario in Canada to the southern coast of the United States. It is not usually found west of Texas or Manitoba, Canada. It can be found at Rice Creek Field Station. The best habitat is shallow water located near diverse stands of willow, oak, and pine (Craighead, 2004, p. 2). The location of the water and the abundance of vegetation, which not only shades the forest but also covers the ground with broken undergrowth, is what the frog's final survival needs..