 Giant panda An An plays with a "puzzle feeder" in the Ocean Park in Hong Kong, south China, March 9, 2006. The two-feet feeder, designed by university students in Hong Kong, is made from a plastic pipe with holes and a painted surface, in a bid to keep pandas healthy within zoological facilities.
 Giant panda An An plays with a "puzzle feeder" in the Ocean Park in Hong Kong, south China, March 9, 2006.
 Giant panda An An crawls toward a "puzzle feeder" in the Ocean Park in Hong Kong, south China, March 9, 2006.
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