Ling-Ling (left) and Hsing-Hsing, the National Zoological Park’s Giant Pandas, play together in their outside enclosure (1985). (From the Smithsonian Institute Archives)
Ling-Ling and Hsing-Hsing at National Zoo
Ling-Ling (left) and Hsing-Hsing, the National Zoological Park’s Giant Pandas, play together in their outside enclosure (1985). (From the Smithsonian Institute Archives)