I remember a long while back, someone (I forget who, sorry) mentioned changing the eyes of the Taun Taun to appear more animal-like...
... well, here's my mock up attempt at doing just that. Though it didn't come out quite how I expected... the Tuan Taun has eyes that appear more alien than horse or cow, but since I put in all this work (it was pretty tedious), then I am going to share it, even if it isn't the best mock up!