NEW WotLK PET! Reports are coming in of a creepy new pet that can be purchased in the beta. The Ghostly Skull, sold by Black Market vendor Darahir <Reagents and Magical Goods> for 40 gold, will make the perfect traveling companion for your new Death Knight. Darahir can be found peddling his wares in the sewers of Dalaran. The teeth-chattering skull emits an eerie blue glow while hovering next to its owner.
With the addition of this pet, plus the pet store (owned by my counterpart) and the Giant Sewer Rat, I'm thinking that Dalaran is going to be a very posh and popular place for pet procurists.