Silooth

The silooth was a large Sithspawn beetle bred by the Sith Empire for use as a warbeast. Silooth were ferocious creatures that relentlessly attacked anyone or anything that strayed into their paths, spraying acid and using their powerful mandibles to crush their victims. The only deployment of the silooth in combat en masse was during the Battle of Kalsunor, when the Sith released the creatures on the planet Kalsunor and subsequently laid waste to the world. Afterward, the Sith continued to use the beetles on a smaller scale, and descendants of silooth transported to Kalsunor continued to inhabit the world thousands of years later.

Text and facts from the “Silooth/Legends” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.