Finally met one of these fluffballs. It was jusbjow on Ragnarok, to be specific, on the northern coast. I had been exploring and got lost in the dark. I hopped some rocks to get across some water, only for my torch to break. Immediately, I hear poud thumps coming my way. Thought it was a parasaur, so imagine my surprise to hear the sounds of being eaten. Still haven't seen one of these guys.

1 up =1 Sacrifice to the Fluff Lords