Shadow of the Dune
An ankheg has six legs and a many-segmented body, all covered in a brown (some closer to yellow) chitinous exoskeleton. The head has black compound eyes, mandibles capable of snapping small trees, and antennae. Usually, ankhegs do not create tunnels, and simply burrow down into the ground. However, they are able to make tunnels if they dig slowly. When seriously pressed, it can spit acid. Spitting acid is usually a last resort, as it cannot digest food for several hours afterwards. Ankhegs are around 10 feet long and weigh 800 lb. One might describe it as a giant combination of ant, cockroach, and larval antlion.