I think that is an invasive species with urticant hairs. Don't let your dog neat it, it can be lethal for them.
Or could be just a hairy caterpillar...
I have no idea what it is (was?). Not even sure how it got on the chair. Didn't seem like it knew how to get down.
Dont touch it! It seems to be a caterpillar of the infamous Dalmaothi Raffagoteccae family. They may cause severe accute irritation
