Vocal pouch

A vocal pouch was part of the amphibious Drabatan species' anatomy. When necessary, Drabatans switched to a secondary language that was quieter and simpler than their primary language Drabatese, passing air through their vocal pouches to emit croaks that they could vary in pitch.

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