This is a medium sized, moderately heavy bodied frog which is often mistaken for a small bullfrog. The head and shoulders are leaf green, often darkening posteriorly. Small, irregular black spots are randomly located on the back sides, and legs. They are found in virtually all permanent bodies of water, and are rarely far from water. They feed primarily on insects.
Breeding takes place in late spring or early summer. The call is a low “boing” likened to the twanging of a loose banjo string. Larva of the green frog usually overwinter, then transform the following spring; hence the tadpoles can be quite large.