Panda twins thriving at Madrid zoo

Visitors throng to Madrid Zoo to look at new born panda cub twins in Madrid, Spain, Oct 19, 2010. The twins from the Giant Panda Breeding Research Base in China's Chengdu are now developing well under the watchful eye of Chinese experts in the zoo. They were born on Sept. 7 this year there after their mother Hua Zuiba was impregnanted via artificial insemination on April 25. They made their first public appearance on Oct. 7 at the zoo. [Photo/Xinhua]