The Cuban treefrog Osteopilus septentrionalis is a very large (up to 140 mm in Florida) treefrog that is not indigenous to the United States. It is variable in color, ranging from gray to green to brown, and individuals are capable of changing color. Cuban treefrogs also have very warty skin, a mottled color pattern, and very enlarged toe discs. The front toes are not webbed and the rear toes are only slightly webbed. (Ashton and Ashton 1988).Internal examination reveals that the skin on top of the head of adult is fused with the bones of the skull, which is a trait not shared by native species (GSMFC).O. septentrionalis tadpoles are black above and lighter below, with a wide-finned tail flecked with dark spots (Ashton and Ashton 1988).