Which End Is Which?

On this morning’s hike we encountered this colorful critter puttering his way along the rocks on the slope of Margaret Hill. He was bright and highly visible against the gray granite and the backdrop of green plants and about the length and thickness of an index figure. Which end is the front, you ask? He was moving right to left, so you’ve got to think the red knob at the left end was its head — but then again it might have been trying to trick us by backing up.