Massiff

These reptilian predators are nonsentient natives of Geonosis, and residents of Tatooine (Attack of the Clones). On Tatooine, they were domesticated by the Tusken Raiders, and on Geonosis, if the Geonosians supplied the shelter, the massiffs (MAS-siff) will rid the hives of pests and other such creatures. You can tell the age of a massiff by the number of antlers down its back. It is believed that a ship carrying massiffs crashed in one of Tatooine's infamous sandstorms, and the massiffs were nearly killed off by the Tusken Raiders. Some of the Sand People, however, kept them. Because their senses, specifically for Geonosis, were near useless on Tatooine, what with all the sand and visibility issues, they were kept as camp guards, attacking intruders upon sight.