Mum has learned over the years living here on our mountain, that sometimes things aren't what they seem. So when she sees something very odd, she usually takes a photo, does a quick Google search to see what that weird thing may be.
Good thing she did with this little guy, as we hear he packs a nasty sting. Native to Eastern North America, the Saddleback Caterpillar is the larvae of the adult is a dark brown, stout-bodied moth. This moth is very distinctive as you can see in the color photo, with bright green and a large brown spot on it's back that looks like a saddle, and very porcupine-y hairs coming out on the front and back end.