A RatCorp is an enemy in Duke Nukem: Land Of The Babes.
It basically looks like a large humanoid brown rat and it is the first enemy the player will encounter in the game. It's primary arnament is a hand gun. When killed the player will have their health healed by 5 if it was lower than 100 at the time. As one of the earliest enemies in the game they don't pose much of a threat on their own.