It's a wolf themed site where you can play as your wolf fursona. It has an epic system so that you can have a "mate" that gives you battle bonuses and most people roleplay over messages with their mate as well. Also, there's a whole map and leveling system so that you can actually gain levels by fighting animals. xD It's really cool. Oh, and you can have multiple accounts on it (as long as the accounts doon't interact in any way) for all of your characters. There's even a pack system so that you can join a "pack" and have a private pack forum. You can even fight other users! And some people pay RL money over Paypal or Snailmail so you don't have to use one of the basic wolf sprites (brown, black, gray, and white) and have your own custom sprite! It's really awshum. xD My main account, Alonaria, is even a staff member (News Editor) on there.
http://www.Wolf-Haven.com/?refid=7553