In this Jan.6, 2006 file photo shows John Grogan, author of the best selling memoir "Marley & Me," poses with his new dog, Gracie, at home in Emmaus, Pa. Grogan is working on a prequel to the million-selling memoir about his dog. "The Longest Trip Home" will be released in October by William Morrow, an imprint of HarperCollins. (AP Photo/Rick SmithFile)

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