Racoons are generally quiet.

Hah! When I lived in Toronto, I lived near the Don Valley, which is one of few greenways in the city. It doubled as our local mountain biking trail, garbage dump, and racoon breeding ground. These aren't yer ordinary country bumpkin racoons, though -- I've seen those at my parents acreage in Texas. These were urban hoodlums that were consistently about the size of... I was going to say basketball, but that'd be a runt. They were mean, and possibly rabid, too -- it's prudent to cross the street when you see them. I can't begin to count the number of times I heard screaming racoons fighting any domestic animal stupid enough to get close (kinda like Yz33d ) -- more times than I ever heard any of the abundant neighbourhood dogs, anyway.