VIDEO: Zoo's panda cub Bei Bei climbs tree with help from mom Mei Xiang

The National Zoo's panda cub Be iBei is growing up so fast.

On Monday, the Zoo released video of the cub climbing a tree - with the help of mom Mei Xiang who never left his side.

In the video, the baby makes his way down the tree while mom's outstretched arms are waiting as a safety net just in case of a slip.

Lots of milestones this year for Bei Bei! Last month he played in the snow for the first time:

Just last week he started eating solid foods:

MORE VIDEO from the zoo: