Guest: Mark Cushing, CEO of Animal Policy Group and author of Pet Nation

Twenty years ago, Duke the Dog lived out in the backyard.  Now he lives in the house and sleeps in a bed.  And so we ask:

How did the United States become  a Pet Nation?

Topics include a look at how animals became pets that fly on planes with us; how the transformation from working animals to pets was made; and how pets are now transforming the nation’s economy.