In 2005, South Korean scientists created the world's first cloned dog, and now the country has announced plans to use clones to sniff for drugs. Yesterday the Korean Customs Service announced that seven Labrador retrievers had been cloned from an expert drug-sniffer that is still on the job. The scientists leading the research at one point worked with disgraced researcher Hwang Woo-suk, but the dog cloning work is legitimate.