The Thrashing Caterpillar

On my way to the outdoor shower on Saturday morning, I stopped to visit with Fritz on the back porch. There he was, all innocent and cute, and there were rustly, thrashy noises coming from the garden. "Oh no!" I thought, "he caught a bird and it is lying over there in death throes! Or in wounded throes!" and I ran over to look. Nothing readily apparent, but still could I hear leaves moving about. I waited and waited and finally my eyes honed in on a little caterpillar! Or rather, a rather large caterpillar. And it was thrashing like mad! It thrashed itself right out of the dry leaves under some plants and onto the rockwork of the back terraced area. It started crawling toward Rosa Winchester Cathedral, with periodic fits of thrashing. On the rock, after thrashing, it would find itself pointed a different way each time and so would start crawling off in that new direction. I was a little worried about him being on the very hot rock so I got a leaf and tried to help him onto it, which caused another fit of thrashing; so I got a larger leaf, tricked him onto it with no thrashing, and deposited him in the tall green grass of the kitchen garden. I could hear periodic thrashing throughout my shower, and could even hear him about an hour later when I went out to see how he was doing. I have never seen such a thing before. Film to be posted as soon as I edit out the parts where I got distracted and the camera without me filmed things like my feet and the towel I was wearing.