Skiing Caterpillar. By the end of my ski the other day I was hanging my head down, shuffling along after many falls and noticed, too late, a spider on the snow. I ran over him and went back to find him smeared. Then soon after I noticed a caterpillar. I spared him with an unusually agile sidestep. I haven't seen a caterpillar before while out skiing. I told this to my cousin and he had recently seen one as well. I guess even caterpillars like to use a well-groomed ski trail sometimes.