In Southwest China's Sichuan province, the giant panda research centre welcomed 21 cubs in 2011. The endangered species has reached a total of 333 pandas, and can now breed on their own.

Captive-bred pandas out of danger of extinction

Li Jia, keeper of Chengdu Research Base, said, "This is Ally, the eldest one of the cubs, one month older than the youngest one, Liu Yi".

Li said, "Liu Yi was only able to sleep facing up, then she learned to lay facing down. Recently she has mastered another position and is able to sleep on her side like the other pandas."