A tourist takes photo of Carter, a two-year-old male sniffer dog, at Xi'chang Railway Station in Xi'chang City, southwest China's Sichuan Province, Jan. 20, 2014. 2014 is the first year for Carter to take part in the anti-drug mission of the Spring Festival travel peak period. Every afternoon and night he and the other dogs would be on duty at the railway station. Thanks to their efforts, two drug cases have been detected since the beginning of the travel peak. (Xinhua/Wang Xiaodan)
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