Dogs give us puppy eyes . . cats grace us with their presence. But we love them both . . or at least a lot of us do. But why are the two most popular pets so very different? It all boils down to genetics and history.

The Backstory: Frozen … Then Waking Up a Century Later
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The Backstory: Shocking Items from the Sears Catalog
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The Backstory: Murder and the Family Next Door
06:55