Requires Artisan Riding if I recall correctly, can't think of anything else.
"Reminds me of a dog, you stare at it while it's playing outside... Running around in a circle, then stopping up, wagging with a wide "grin". Jumping around until you call for the dog, then it lowers its tail because it think it's done something bad... And then you throw the ball, seeing the tail go straight into the air in bliss! ^^" - Gehco Wishblade of Kazzak EU
If you have Artisan Riding and you can't get the quest from him, most likely you already did that part. Head to Dragonmaw Fortress and see if a) there's any quests there (the next part of the chain is from a dragon flying in the air overhead) or b) you transform into a fel orc, in which case you've already finished that part and can head to Netherwing Ledge to do the dailies.