Police dogs have been helping helping their human counterparts identify contraband for years — sniffing out drugs, bombs, cash and suspects. Now they can add hard drives to the list. As reported by the Providence Journal of Rhode Island over the weekend, state police now have a dog named Thoreau capable of smelling concealed hard drives, thumb drives, memory cards, and other electronic storage media. Thoreau, a Golden Labrador, already helped arrest one suspect in June, locating a thumb drive containing child porn hidden in a tin box inside another metal cabinet.