Croconaw are medium-sized, bipedal, crocodilian Pokémon, mostly blue in coloration with yellow accentuations and black eye markings. Croconaw have three clusters of red spikes on their body, one with three prongs on its head like a crest, one with two prongs on its back, and one diamond-shaped spike on its tail. Croconaw has a set of pronounced, yellow-colored jaws. Although Croconaw has been described as always having forty-eight fangs lining its mouth, only six are discernible, with only four visible when the mouth is closed. They possess an asymmetrical, yellow-colored pattern on their chests that somewhat resembles a spotted animal skin.