Police dog on duty during Spring Festival travel rush

Judy, a police dog, works with its handler Zeng Yong at the South Square of Chongqing North Railway Station in southwest China's Chongqing, Jan. 30, 2019. Ten-year-old Judy is an experienced sniffer dog on possible explosive devices. It will retire from the frontline work after this Spring Festival travel rush. (Xinhua/Tang Yi)