Grutchyna
this large, Yuuzhan Vong creature was created to accompany a landing party. When the Yuuzhan Vong warriors arrived on a world, the grutchyna would begin digging into and consuming the crust of the planet, creating a network of tunnels and caves in which the warriors could hide and plan their attack. Grutchyna could also be used to dig into the tunnels of an entrenched enemy, providing seconary access to underground bunkers. Each grutchyna measured some six meters in length, and was protected by heavy, black, armor plating. In addition to the difference in size, grutchyna were also more intelligent than the grutchin, and could be trained to carry and deploy troops into battle. As the invasion wore on, the Yuuzhan Vong adapted the grutchyna for use in attacking orbital space stations, a variety that could use its caustic digestive juices to burn through metal plating.