FILE - In this March 15, 2004 file photo, released by China's Xinhua News Agency, Hua Mei, an American-born giant panda, eats bamboo at the Wolong Nature Reserve in Chengdu, southwest China's Sichuan Province. Hua Mei gave birth to her eighth cub on Friday, Sept. 17, 2010, in southwest China, a rare accomplishment for the endangered species known for being poor breeders. (AP Photo/Xinhua,Chen Xie, File)

Photo by: Chen Xie

FILE - In this March 15, 2004 file photo, released by China's Xinhua News Agency, Hua Mei, an American-born giant panda, eats bamboo at the Wolong Nature Reserve in Chengdu, southwest China's Sichuan Province. Hua Mei gave birth to her eighth cub on Friday, Sept. 17, 2010, in southwest China, a rare accomplishment for the endangered species known for being poor breeders. (AP Photo/Xinhua,Chen Xie, File)