Ouyang Honghong, a fire department dog handler, bathes his 14-year-old sniffer dog named Bingjie at a fire station in Nanjing, capital of east China's Jiangsu Province. (Xinhua)

Ouyang Honghong, a fire department dog handler, poses for a photo with his 14-year-old sniffer dog named Bingjie at a fire station in Nanjing, capital of east China's Jiangsu Province. (Xinhua)

A sniffer dog named Bingjie is in training at a fire station in Nanjing, capital of east China's Jiangsu Province. (Xinhua)