5月4日，在成都大熊猫繁育研究基地，大熊猫“毛二”在进食。5月3日，中国动物园协会与丹麦哥本哈根动物园在北京签署《中丹大熊猫保护研究合作协议》。根据协议，来自成都大熊猫繁育研究基地的大熊猫“和兴”“毛二”将远赴丹麦，旅居哥本哈根动物园。据悉，中国与丹麦将就共同保护和繁育大熊猫开展为期15年的合作研究。[新华社 薛玉斌 摄]
Giant panda Mao Er feeds herself at the Chengdu Research Base of Giant Panda Breeding in Chengdu, southwest China's Sichuan Province, May 4, 2017. A pair of giant pandas, male He Xing and female Mao Er, will head to Copenhagen for collaborative research between China and Denmark. They will live in Copenhagen Zoo for 15 years, according to the agreement signed between the Chinese Association of Zoological Gardens and the zoo. (Xinhua/Xue Yubin)