They are pretty opportunistic they will live in hollow trees, empty groundhog burrows, brush piles, empty buildings, attics...
They dont hibernate but do fatten up for winter...They eat just about everything...
http://www.wonderclub.com/Wildlife/mammals/racoon.html
They can be quite nasty and a big one can do alot of damage to a terrier...
Messed my pup up pretty good he got a couple of big deep holes in his gums...