A bomb-sniffing dog smells a bag during a security demonstration in New York. Researchers are training dogs to be able to detect cancer in human urine.
A bomb-sniffing dog smells a bag during a security demonstration in New York. Researchers are training dogs to be able to detect cancer in human urine. Richard Drew Associated Press file
A bomb-sniffing dog smells a bag during a security demonstration in New York. Researchers are training dogs to be able to detect cancer in human urine. Richard Drew Associated Press file