As a brony and a player of Pathfinder, I was pleasantly surprised by Ponies for Pathfinder, a campaign setting which is currently being funded on Kickstarter.
The creators have already reached their initial goal, so the book will definitely be finished. However, they have a bunch of community-based stretch goals, and the one which have been just reached allows backers to vote for an additional playable race to make it into the book. Currently, dragons and zebras are tied, followed closely by griffons.

Anyway, I just thought that I should advertise the project, since I really want to see it become everything it can be.