A dog's nose is so sensitive that if a human could see as well as a dog could smell, we would be able to see the small letters on an eyechart from four (four!) miles away. Is it any wonder then that dogs can be trained to find missing people in piles of rubble or a certain flower blooming amongst hundreds or thousands of other smells? In Sniffer Dogs you will meet many dogs and their handlers and learn all about their jobs. Some of these dogs are raised from birth to detect blood sugar levels in their owners. Others are rescued from animal shelters and their boisterous personalities help make them excellent sniffer dogs. Featuring a balance between science and social science, Sniffer Dogs will appeal to dog lovers and science lovers alike.