Azzi added that teaching a dog how to sniff out kiddie porn on hard drives is no different than training them how to detect a rotting corpse. “You isolate an odor,” Azzi said. “You’ve got to find the right dog for the job. Nothing more, nothing less.” Ruger is Ohio’s first computer-sniffing dog and part of a small group of canines — fewer than two dozen — that do this type of work across the country, according to US Immigration and Customs Enforcement.