Mexico is fighting flesh-eating screwworm crisis with sniffer dogs
With tail wagging, tongue out and ears perked, Hummer – a young mixed-breed dog with a slick black coat – sits down in front of a sample of screwworm scent, promptly accepting praise and treats from his handler. Trained to detect the smell of screwworm, a flesh-eating pest that has infected Mexico’s cattle herd and…
