Gogiteth

"Gogiteths make a clacking sound as they move about. The joints in their many legs pop and crack with each movement, though they can suppress this sound voluntarily so that they can hunt without giving away their presence. The odd creatures can also make a high-pitched sound that echoes throughout the caverns where they live. Some Darkland natives report that groups of gogiteths sometimes join together in eerie, disordant songs."
- Pathfinder Bestiary