Altho this might be better on the dwarf fortress thread, there is a realy great mod for it that adds ponys as a playable races, including some great ideas for both zebras and buffalo.( Sacred white buffalo anyone?)
It may sound silly,but even if you dont play it some of the stuff in it is prime fanfic/world bulding fuel.
Edit. Bah, thats nothing before the madness of Pinki pie or fluttershys flutterrage.