It's a bit of a combination between a cow and a horse. The agricultural version is more like a workhorse, but there are also kho's for riding.
I still need to decide if this is all taking place on another planet or on earth, but in the latter case practically everything as we know it is destroyed. The organisms are replaced by others which the Enemy brought with it, so there's no such thing as grass, cows, grain, oaks, goats or flies. But that'll be a lot more difficult to do and I'm afraid I'll start overdoing it. Time'll tell, though.
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The last arrow of Legolas kindled in the air as it flew,
and plunged burning into the heart of a great wolf-chieftain.
All the others fled. -J.R.R. Tolkien, The Lord of the Rings
