I want to upgrade my pet menagerie to level 3 but of course the plans are gated behind an achievement: win 500 pet battles in Draenor. Ugh! I wish they would get this behind something more sensible like, defeat all the trainers in the level 2 menagerie or defeat all the Draenor trainers. That would be fun and make sense. But no... grind pet battles for no reason. Considering we can level pets 1-25 in fewer than 10 battles, why even do this many battles? I like the daily trainers in level 2, but I'm sure I'll run out of those before I get 500 battles under my belt.
So the next question is: where is a good place to grind this? Better yet, is it possible to move the counter by pet battle dueling someone in Draenor?