WASHINGTON (WJLA) — The baby boy panda at the Smithsonian National Zoo turned 7-weeks-old Friday, and zookeepers say the plump guy had a big growth spurt in the last week. While mama bear ...

A female panda cub born on June 18 in Guangzhou, Guangdong province, has grown from 178 grams since birth to 1230 grams as of Thursday, showing healthy conditions. [Photo by Zheng Erqi/chinadaily ...

Additionally, DNA analysis requires fresh panda feces, making it impractical for large-scale operations and unable to reflect the total panda population nationwide.