Photo taken on Dec. 5, 2015 shows siberian ibexes in Fuyun County of Altay, northwest China's Xinjiang Uygur Autonomous Region. Siberian ibexes live mostly in steep slopes and rocky scree areas with an altitude of 3,500 to 6,000 meters. (Xinhua/Ding Ning) 

Photo taken on Dec. 5, 2015 shows siberian ibexes in Fuyun County of Altay, northwest China's Xinjiang Uygur Autonomous Region. Siberian ibexes live mostly in steep slopes and rocky scree areas with an altitude of 3,500 to 6,000 meters. (Xinhua/Ding Ning)

Photo taken on Dec. 5, 2015 shows siberian ibexes in Fuyun County of Altay, northwest China's Xinjiang Uygur Autonomous Region. Siberian ibexes live mostly in steep slopes and rocky scree areas with an altitude of 3,500 to 6,000 meters. (Xinhua/Ding Ning)

Photo taken on Dec. 5, 2015 shows siberian ibexes in Fuyun County of Altay, northwest China's Xinjiang Uygur Autonomous Region. Siberian ibexes live mostly in steep slopes and rocky scree areas with an altitude of 3,500 to 6,000 meters. (Xinhua/Ding Ning)

Photo taken on Dec. 5, 2015 shows siberian ibexes in Fuyun County of Altay, northwest China's Xinjiang Uygur Autonomous Region. Siberian ibexes live mostly in steep slopes and rocky scree areas with an altitude of 3,500 to 6,000 meters. (Xinhua/Ding Ning)