Worrt

Star Wars Lore
Native to Tatooine, worrts are blindingly stupid and will attack anything that appears remotely edible -- metal, poisonous plants, and large rocks have been found in the guts of dead worrts. Though they have been known to pester human-sized targets, they generally avoid prey larger than themselves. Worrts can be domesticated as pest-catchers, but their stupidity makes them difficult to train. Jabba the Hutt was believed to have maintained several worrts as pets, which explains the unusual concentration of the creatures near his palace.