Gray Treefrog and Cope's Gray Treefrog
These two species are very similar. Both have warty skin and prominent adhesive pads on fingers and toes. Color varies from green to light greenish gray, gray, brown or dark brown. Except for very light individuals, a few large, irregular dark blotches are usually present on the back. A large white spot is always present below each eye. Belly is white. Inside of hind legs is yellow or orange-yellow with gray or black mottling. The call of the gray treefrog (H. versicolor) is a musical birdlike trill. The call of Cope’s gray treefrog (H. chrysoscelis) is a high-pitched buzzing trill, and this species tends to be smaller and is more often green than its lookalike relative.