Croconaw is a medium-sized, bipedal, crocodilian Pokémon with a blue and yellow body. Croconaw has three clusters of red spikes on its body: one with three points on its head like a crest, one with two points on its back, and a diamond-shaped spike on its tail. Black markings surround its red eyes. Its lower jaw is yellow and pronounced, and its chest has an asymmetrical, yellow pattern resembling a spotted animal skin. Although Croconaw has been described as always having forty-eight fangs lining its mouth, only six are discernible with four visible when the mouth is closed. It is capable of regrowing lost fangs. Its teeth are positioned like barbed fishing hooks and are impossible to pull out with ordinary strength.