There is nothing but feral horses on the earth. The fascination with the Przewalski horse, the so-called last wild horse, may have well come to an abrupt end. A new horse DNA study by Orlando et al. has revealed that the Mongolian horse is feral, not wild. This is a huge surprise and casts a veil on the true origin of the modern horse. It will be interesting to see what future studies unravel.
For more information about this new study, you can read the article: Ancient DNA upends the horse family tree, published by Sience on February 22.
Of course these findings make parts of my story of the Asian Wild Horse (published on this website) largely obsolete and inaccurate, but I will not blame you if you still want to have a read! There is no denial that the story of the Przewalski horse remains an interesting one at least from a conservation and historic point of view.