Female giant panda Taotao eats birthday cake at Jinan Zoo, Jinan, East China's Shandong Province October 28, 2007. Taotao, 35, is the eldest giant panda bred in captivity in the world. The average life span of giant pandas is about 25 years. Zoologists say Taotao's age is equal to that of a 100-year-old human being. [newsphoto]