Thud bugs were genetically engineered insects used by the Yuuzhan Vong. They were small beetles that flew and rammed into their enemies, usually landing with a resounding thud. The Yuuzhan Vong commonly used them to strike enemy warriors' sensitive areas, mysteriously causing the galactic birth rate to decline over the years. File:Wiki.pngThis article is a stub. You can help Darthipedia by expanding it. If you don't, we'll destroy your planet.