How are drug sniffer dogs trained to detect drugs? Xinhua's Tian Zhongquan takes you to a police dog training base in Xiangyang, China's Hubei to find it out.
Produced by Xinhua Global Service
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How are drug sniffer dogs trained to detect drugs? Xinhua's Tian Zhongquan takes you to a police dog training base in Xiangyang, China's Hubei to find it out.
Produced by Xinhua Global Service