- "Rancors are reptilian monstrosities known as some of the galaxy’s most dangerous predators. Although indigenous to the planet Dathomir, they have spread to many other worlds and thrived in many environments. Rancors are a favorite among the wealthiest underworld crime lords, who raise them from eggs to become (relatively) tame pets. Those whose rancors survive to adulthood are afforded a great deal of status, as well as a powerful weapon against their enemies. A unique feature of the rancor is its tough hide–a mixture of fine scales, thick skin and bony plates. Blaster bolts and vibroblades have little effect upon the hide, and while these attributes fade from a hide removed from a rancor carcass, a few lucky hunters nonetheless wear ornamental outfits made from the material."
- ―In-game Codex (Bestiary)
Rancors are large carnivorous reptomammals originating from the planet of Dathomir. They are usually born brown. Although found on other worlds, those from Dathomir are said to be stronger and more intelligent than others. They have long arms down to they're feet and have long claws. In The Return of the Jedi Luke Skywalker fought one of these with a long bone. Forced by Jabba the Hutt.