Patrat is a rodent-like Pokémon that resembles a chipmunk. It is mostly brown with a tan stomach and face. Its tail is long and straight with a scruffy white tip. It has a large pointed tooth that sticks out of its mouth. Patrat has a flat face, and its cheeks are very round. Its ears are small and pointed. Its head has a black band that covers the eyes, which have red irises with a yellow ring, and black pupils. Its feet are small and black, with three toes.