ANTU COUNTY, CHINA - JULY 2: (CHINA OUT) Siberian tiger cubs play at Erdaohe Tiger Park July 2, 2006 in Antu County of Yanbian Chaoxian Autonomous Prefecture, Jilin Province, China. About 15 artificially-fed Siberian tigers from Harbin Siberian Tiger Park are trained there to develop their ability to live in wild. The wild Siberian tiger is listed as one of the most endangered species in the world, with its existing number estimated at around 400 worldwide, mainly in the northeastern part of China and the Far East of Russia. There are more than 1,300 Siberian tigers have been raised in China, according to reports. (Photo by China Photos/Getty Images)