We have come across some interesting caterpillars crawling around our backyard this fall. This first one looks to be a banded tussock moth (Dasychira obliquata.) Here is what it looks like as an adult moth (not as aesthetically interesting.)
This critter is a polyphemus moth (Antheraea polyphemus.) The moth this will eventually become is enormous! We will have to keep watch for them in the coming weeks. If I find this caterpillar again we may keep it until it metamorphoses.