The game that D has loved so well for so long has finally recognized his heart's desire in the form of "Achievements." Several of these are right up his alley, promoting thorough exploration of every inch of every zone, and true appreciation of all the wildlife therein.
How to get it?
Lots and lots of exploration, and I quick '/love' macro, and this achievement will be yours! If you're doing the "full exploration" achievement as well, you'll have no problems. Understand, however, that at least 3 of these critters have only been spotted on Northrend thus far, so you may have to wait another couple of weeks to really finish it.