Gray treefrogs hunt for food in moist, forested areas in the evening and at night, often hiding in rotten logs and under tree roots. Because they need pools of water to breed in, they are never found very far from ponds, streams and lakes. As tadpoles, they eat algae, according to the Encyclopedia of Life. A single grey treefrog eats huge numbers of insects and can significantly reduce the number of mosquitoes and gnats in an area.
Grey treefrogs are small frogs that are often less than 3 inches in length. They have sticky foot pads and tend to be rather warty-looking. After entering the frog life stage, they become a bright green color for a brief period of time, but after that, they change color to match their surroundings, as explained by the Encylopedia of Life. They also hibernate through winter. There are actually two different species of grey treefrogs that share the same habitats, but they are only distinguishable by their mating calls. Grey treefrogs spend about two months as tadpoles and live seven to nine years as frogs.