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. These teeth are strong enough to gnaw through steel. There are three whiskers on each side of its face, which it uses to maintain balance. Females will have shorter whiskers and lighter fur. 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.
If attacked, Raticate stands up on its hind legs, bares its fangs and shrieks in an intimidating manner at its enemy. It is willing to take on larger foes if provoked enough. It often needs to gnaw on something, like rocks and logs, but it may even chew on the wall of houses and is capable of chewing cinder walls and topple concrete buildings. This Pokémon typically lives in plains and savannas.
Raticate most resembles a muskrat, a semi-aquatic rodent, due to the large teeth, whiskers, fur, and body shape. Its scruffy ears look like those of a guinea pig. Its webbed feet may be inspired by the coypu, a South American rodent.