It seems that if u go to Mor'vek in Un'goro Crater he will give you a daily quest to get splashed by ravesaur poison 20 times
Once that one's done, you get a ravasaur pet that gives you a daily quest.
Today, I got one to feed it 15 fresh dinosaur meat from various dinos in the crater.
Each daily gives you a raptor baby tooth.
20 baby raptor teeth, 20 runecloth, 20 rugged leather and 80g gets you the mount.
It seems that you only get splashed if you are HITTING the revasaurs. this could be a problem for high level toons I would suggest un-equiping your gear and bring a super low level weapon, since your unarmed will likely be high, you don't want to kill them off too fast, at least that's how its working on the PTR.