Guo Ru-hsiao, Pool, File

FILE - In this file photo taken Saturday, Jan. 24, 2009, Tuan Tuan and Yuan Yuan, the two giant panda from China, are displayed their new enclosure at the Taipei City Zoo in Taipei, Taiwan. After inspecting the pandas at the Taipei Zoo on Sunday, Nov. 8, 2009, Chinese panda expert Zhang Hemin suggested a separation of a month or two might rekindle the affection needed to reproduce.