Millions of rescue dogs from the rural South have been transported to new homes thanks to the tireless efforts of a grassroots network of dog rescuers. When Hurricane Katrina left more than 250,000 pets stranded, the infrastructure of modern pet transport for a nationwide dog rescue effort was born. Since then, individual volunteers, transporters, shelters and rescue groups have created a movement to place millions of southern dogs in areas of the country with high demand for adoption but low supply.