(picture from here: http://www.rosemarysheel.com/archives/tibetan-yak)
The whole last third (half?) of Ariah is totally different now from the first draft, and for the better, I think. Many darlings were killed, and now one has been added: yaks. Yaks hang around the last section of the book, getting milked, shedding fur, being adorable in that way only yaks can be. And it looked like Ariah will end up riding a yak to the end of the book. Turns out in Tibet, yak riding is not uncommon.