4月24日，一只“虎宝宝”在饲养箱中“散步”。从今年4月初至今，作为目前世界最大的东北虎人工饲养繁育基地，位于黑龙江省的中国横道河子猫科动物饲养繁育中心已新添“虎宝宝”50余只。[新华社 王建威 摄]
A Siberian tiger cub is seen in the Hengdaohezi Felid Breeding Center in northeast China's Heilongjiang Province, April 24, 2017. In April, over 50 tiger cubs have been born in the center by now. (Xinhua/Wang Jianwei)