Female giant panda "Ba Si" looks at its birthday cake with good appetite at the Fuzhou Giant Panda World zoo in Fuzhou, capital of southeast China's Fujian Province, Nov. 13, 2010. As the prototype of "Pan Pan", mascot of the 1990 Beijing Asian Games, "Ba Si" celebrated its 30th birthday on Nov. 13. The longevity of "Ba Si" was relevant to its healthy and strong teeth, according to a giant panda expert. The average life expectancy for a wild panda is around 15 years, 25 for a captive panda. (Xinhua)

Female giant panda "Ba Si" hugs Leyangyang, namely happy goat, mascot of 2010 Guangzhou Asian Games, at the Fuzhou Giant Panda World zoo in Fuzhou, capital of southeast China's Fujian Province, Nov. 12, 2010. As the prototype of "Pan Pan", mascot of the 1990 Beijing Asian Games, "Ba Si" celebrated its 30th birthday on Nov. 13. The longevity of "Ba Si" was relevant to its healthy and strong teeth, according to a giant panda expert. The average life expectancy for a wild panda is around 15 years, 25 for a captive panda. (Xinhua)

Female giant panda "Ba Si" eats bamboo with strong teeth at the Fuzhou Giant Panda World zoo in Fuzhou, capital of southeast China's Fujian Province, Nov. 12, 2010. As the prototype of "Pan Pan", mascot of the 1990 Beijing Asian Games, "Ba Si" celebrated its 30th birthday on Nov. 13. The longevity of "Ba Si" was relevant to its healthy and strong teeth, according to a giant panda expert. The average life expectancy for a wild panda is around 15 years, 25 for a captive panda. (Xinhua)

Female giant panda "Ba Si" waves to visitors at the Fuzhou Giant Panda World zoo in Fuzhou, capital of southeast China's Fujian Province, Nov. 13, 2010. As the prototype of "Pan Pan", mascot of the 1990 Beijing Asian Games, "Ba Si" celebrated its 30th birthday on Nov. 13. The longevity of "Ba Si" was relevant to its healthy and strong teeth, according to a giant panda expert. The average life expectancy for a wild panda is around 15 years, 25 for a captive panda. (Xinhua)

Female giant panda "Ba Si" shows good appetite for bamboo at the Fuzhou Giant Panda World zoo in Fuzhou, capital of southeast China's Fujian Province, Nov. 12, 2010. As the prototype of "Pan Pan", mascot of the 1990 Beijing Asian Games, "Ba Si" celebrated its 30th birthday on Nov. 13. The longevity of "Ba Si" was relevant to its healthy and strong teeth, according to a giant panda expert. The average life expectancy for a wild panda is around 15 years, 25 for a captive panda. (Xinhua)