The nation has to get ready to say bye bye to Bao Bao.

FOX's Jill Nado has that story from Washington:

We knew it was coming, but maybe not this soon. The Smithsonian National Zoo in Washington has to send Bao Bao the panda to China on February 21.

It's part of the deal with the China Wildlife Conservation Association, all panda cubs born at the zoo have to move to China by the time they turn four. Bao Bao hits that ripe old age on August 23.

Fortunately, we have a little more time with Bao Bao's baby brother, Bei Bei, who is only about a year and a half old. You can still catch both of them for now on the zoo's panda cam online.

In Washington, Jill Nado, FOX News.