In this photo provided by the San Diego Zoo, veterinary resident Matt Kinney, listens to the heart and lungs of giant panda cub Xiao Liwu, Wednesday morning, January 30, 2013 during a routine exam at the San Diego Zoo. The six-month-old cub, born on July 29, 2012, is growing and gaining weight as expected; he weighed 19.4 pounds (8.8kg) and measured 24.6 inches long (88 cm) this morning. (Photo by AP Photo/San Diego Zoo)
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