2 of 15: Mac, an Australian Terrier from Sarasota, Fla., runs on a treadmill in a doggie spa inside the Hotel Pennsylvania, Sunday, Feb. 10, 2013, in New York. The hotel is located across the street from Madison Square Garden, home of the Westminster Dog Show, which is scheduled for Monday and Tuesday. (AP Photo/Kathy Willens) (AP Photo/ Kathy Willens)

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