- He He, Mei Mei
- China (Wenchuan)
The first set of twin pandas (Ailuropoda melanoleuca) known to have been born in captivity to a captive mother and a wild father are He He and Mei Mei (China), born at He Taoping Base of China Conservation and Research Center for the Giant Panda, in Wolong National Nature Reserve, Sichuan, China, on 25 July 2018.
Cao Cao, a sixteen year old panda, gave birth to He he (meaning Harmony) the elder brother who weighed 215 grams (7.6 ounces), and Mei Mei (beautiful) the younger sister, who weighed 84 grams (3 ounces), on the 25th of July. The cubs have been named after two panda characters in popular Chinese cartoons.
This was not the first time Cao Cao delivered offspring conceived when she was released in the wild, on the 30th of July 2017 she gave birth to a single cub that weighed 216 grams, far more than the average birth weight for a panda cub, 150 grams.