Giant panda twins celebrate 4th birthday in Belgium

Panda twins Bao Di and Bao Mei have celebrated their fourth birthday at the Pairi Daiza Zoo in Belgium.

The zoo provided a specially-made birthday feast in a new enclosure for the growing young bears.

Their birthday celebrations attracted many visitors. Under the joint breeding program, any cubs born overseas must be sent back to China by the time they turn 4 years old.