Raticate is a large rodent Pokémon. Although it is often depicted on its hind legs, it is a quadruped. It is mostly tawny colored with a cream underside. It has large incisors that grow constantly. There are three whiskers on each side of its face, which it uses to maintain balance. It has webbed feet with three toes that allow it to swim. Its tail is long and scaly, and its ears have a ragged appearance. Females will have shorter whiskers and lighter fur.
If attacked, Raticate stands up on its hind legs, bares its fangs and shrieks in an intimidating manner at its enemy. These teeth are strong enough to gnaw through steel. It is willing to take on larger foes if provoked enough. It often needs to gnaw on something, like rocks and logs. It may even chew on the wall of houses, and is capable of chewing cinder walls and toppling concrete buildings. Its large incisors are also used for its former signature moves, Hyper Fang and Super Fang. This Pokémon typically lives in plains and savannas.