Giant panda Yuan Yuan tastes her "birthday cake" as she celebrates her sixth birthday in Taipei Zoo in Taipei, Taiwan province of China, Aug 29, 2010. A total of 66 families from three generations came to Taipei Zoo on Sunday for the birthday celebration of the giant panda pair Tuan Tuan and Yuan Yuan. Tuan Tuan and Yuan Yuan were sent to Taiwan in 2008 as a gesture of goodwill from the Chinese mainland. Yuan Yuan was born on Aug 30, 2004 and Tuan Tuan was born on Sep 1, 2004.

Families from three generations attend Tuan Tuan and Yuan Yuan`s sixth birthday party in Taipei Zoo, Aug 29, 2010.

Giant panda Tuan Tuan eats his "birthday cake" as he celebrates his sixth birthday in Taipei Zoo, Aug 29, 2010.

Giant panda Tuan Tuan walks to his birthday cake as he celebrates his six6th birthday in Taipei Zoo, Aug 29, 2010.