A police dog sniffs a piece of luggage at a railway station in Kunming City, the capital of Southwest China’s Yunnan Province, Feb. 8, 2018. Local police put five police dogs on duty each day to help ensure the security of the railway station during the Spring Festival travel peak. The dogs work under the guidance of trainers from 7:30am to approximately 10pm. (Photo: China News Service/Liu Ranyang)
