In the 1970s and ’80s, Ling-Ling and Hsing-Hsing’s unsuccessful attempts to mate became front-page news, as did the births of their five cubs ... panda house, with private sleeping dens ...

D.C.’s previous panda family—Tian Tian, Mei Xiang, and cub Xiao Qi Ji—was recalled ... so as not to disturb the sleeping bear behind the glass. “I feel very spoiled having seen them ...