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Photo by: Sheron Long

In this May 2011 photo provided by Sheron Long, Chula, a 30-pound Shetland sheepdog and veteran traveler, rests on a bed in the Sheraton Hotel at the Charles de Gaulle Airport, after a long flight from San Francisco to Paris, France. Travel for humans during holidays is tough enough: Long lines, crowds everywhere, extra bags full of presents. Throw a pet in the mix, and it's a recipe for disaster. Long is the author of "Dog Trots Globe - To Paris and Provence." (AP Photo/Sheron Long)

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