As the holiday weekend rolled around, we started to get a number of tips that Hunters were successfully training themselves a...Worgen pet? Worgen?!? How was this level of cool allowed into the game without anyone knowing about it until now?
Well, it turns out that the Worgen pet is in fact a very clever use of game mechanics somewhat akin to those used by Hunters in order to tame the (now sadly vanished) Grimtotem Spirit Guide. Garwal, a warg NPC in northern Howling Fjord who can turn into a Worgen as part of a questline (the link is the Horde version, but it's the same for both Horde and Alliance) can actually be tamed and kept in Worgen form if the timing is right. Mania's Arcania has a look at the process used here, which involves a little math, a little guesswork, and the strategic use of Wyvern Sting.