A police dog lies during a training at a police dog training base on July 11, 2011 in Beijing, China. The Police Dog Training Base was opened to a media visit to show the dogs skills to the public. (Photo by ChinaFotoPress/Getty Images)

A police dog runs on a treadmill during a training at a police dog training base on July 11, 2011 in Beijing, China. (Photo by ChinaFotoPress/Getty Images)

Tombs of police dogs are seen at a police dog training base on July 11, 2011 in Beijing, China. (Photo by ChinaFotoPress/Getty Images)