Changes

::''Ever viler screams shot forth, cutting through my head like cold, sharp blades. But they were nothing to the sound I heard next – the deathly churning of sand that heralded the arrival of the thresher.''

Dune Threshers have a symbiotic relationship with some sort of small, screeching animal. This is described in the Dune Thresher story info on the official site.[http://www.blizzard.com/diablo3/world/bestiary/dunethresher.xml]