- Size of the adults (up to 5 inches in body length, much larger than native Florida treefrogs);
- Enormous toe pads (larger than toepads of native treefrogs in Florida);
- Bumpy skin on the back, like skin of a toad; and
- Skin on top of head is fused to skull (see test described below).
A good test to determine if a frog is a Cuban treefrog is to grasp the frog firmly, but gently, and try to move the skin around on the top of the frog's head with your fingertip. The skin on the head of a Cuban treefrog is fused to the top of the skull and won't move.