Of all the mounts I have gotten in MOP the riding goats are my fav!
I just love these guys. They look so great and I love their nose rings.
Once you are exalted with The Tillers you can buy the mounts from Gina Mudclaw in Halfhill in the Valley of the Four Winds.
There are 3 different goats to purchase:
1. Brown Riding Goat for 400 Gold
2. Black Riding Goat for 1200G Gold
3. White Riding Goat for 2600G Gold