The grub is not so much a grub as a bloated sack of formless jelly. It extrudes long pseudopods across the ground to move, dragging itself along or rising up to climb. The color of wet liver, the hide looks slimy and almost greasy. Perhaps the size of a halfling, it has no visible sense organs or extremities.
these things can give you skin rashes, not sure if it's from attacking, skinning or searching
they leave Pseudopods when skinned