Slithese

Slithese, or Slithian, was the language spoken by the Slith species of Yavin 13, the sounds of which were produced by rubbing their rough scales over the ground. A number of simple signals could be produced, which conveyed different meanings. The language could be learned by non-Slith also; a number of Gerb learned this skill as a self-defense mechanism. Since Slith lacked vocal cords, they were unable to speak Basic, and while they were able to produce some vocal noises, the unavoidable consequence of moisture evaporation discouraged this developing into an actual language.

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