The Rancor was a monstrous, dinosaur-like creature kept as a pet by Jabba the Hutt. It lived in a pit beneath Jabba's throne room, and whenever Jabba wished to dispose of an underling who had failed or displeased him or any other unwanted visitor, he would hit a switch and open a trapdoor beneath the person's feet, whereupon they would be dropped into the pit. The Rancor would then devour them on the spot, much to the joy of Jabba's other underlings who enjoyed the spectacle. Among its victims was the dancing girl Oola. The feared Rancor was killed when Luke Skywalker caused the doorway to its pen to malfunction and slam shut on its head, crushing its skull.