I found a bug today that I have never ever seen before. It looked at first to be a silvery/gray colored pebble, but when I looked closer, it had tiny legs and was crawling very slowly. I couldn't tell if it was six legs and two antennae, or eight legs. Can you help me?

Well, nothing like that comes to mind right now. See if you can get a pic to send me and I'll post here for you.