The Secret Lives of Pets.

Dr. Alan Beck was formerly the director of the Bureau of Animal Affairs in New York, where he helped draft that city's "pooper scooper" law. A similar was recently passed in Philadelphia. Beck currently works at the University of Pennsylvania's School of Veterinary School where he heads the Center for Interaction of Animals and Society. He has researched pet/owner relationships and stray dogs and their effect on people, including the homeless. He joins the show to discuss the new law and human-animal relationships.

In his new book One Nation Under Dog, Michael Schaffer investigates the booming pet-care industry. He discusses how the $43 billion business reflects our ideas about consumerism, family, politics and domesticity.

Animal behaviorist John Bradshaw has spent much of his career debunking bad advice given to dog owners. His new book Dog Sense details what pet owners should expect from their dogs -- and what their dogs should expect in return from their owners.