Giant Panda Tuan Tuan (L) and Yuan Yuan view each other in the Taipei Zoo, southeast China's Taiwan, March 14, 2013. The panda pair in the zoo, a gift from Chinese mainland, were being arranged to meet each other as the female Yuanyuan is in estrus. (Xinhua)

Giant Panda Tuan Tuan (L) and Yuan Yuan view each other in the Taipei Zoo, southeast China's Taiwan, March 14, 2013. The panda pair in the zoo, a gift from Chinese mainland, were being arranged to meet each other as the female Yuanyuan is in estrus. (Xinhua)