Tibetan wild asses (or kiang) eat beside the Qinghai-Tibet railway in Hol Xil, northwest China's Qinghai Province, Oct. 11, 2008. (Xinhua/Ren Xiaogang) 

Tibetan wild asses (or kiang) live beside the Qinghai-Tibet railway in Hol Xil, northwest China's Qinghai Province, Oct. 11, 2008. (Xinhua/Ren Xiaogang)

Tibetan wild asses (or kiang) live beside the Qinghai-Tibet railway in Hol Xil, northwest China's Qinghai Province, Oct. 11, 2008. (Xinhua/Ren Xiaogang)