Space. They are being hunted because... You know the Tarpan, an ancient breed of horse that became extinct thousands of years ago? The Przewalski's Horse descended from that so technically, it's the only true wild horse in the world because the Tarpan was wild as well. But all the other wild horses like brumbies, new forests... They all descended from captive horses so they're not truly wild. Therefore Przewalski's are very valuable and are being heavily hunted by man.
