What better way to understand puppy mills than to investigate the nature of evil? How does the physical brain process morality? National Geographic Channel investigates ...

DogTown is the largest no-kill animal facility in the country, located on 33,000 acres of Southern Utah canyon country. At any given time, the sanctuary hosts hundreds of dogs from all around the country, and the world, along with cats, horses, guinea pigs, rabbits, goats, and various other farm animals—between 1,500-2,000 animals at any one time. National Geographic Channel teams up with the DogTown’s top-notch staff of veterinarians and trainers to find out what it takes to rehabilitate problem pooches and find them loving homes.

Also ... here is a story from the series about a puppy mill rescue. Watch it and say a prayer: for poor Animal ...for the dogs who are rescued ... the people who rescue them ... and the dogs who didn't make it.