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Florence Harding

O'Boy, the pet dog belonging to first lady Florence Harding, stands in his doghouse on the White House grounds in 1921. (AP Photo/Library of Congress)

Presidential pooches: White House dogs through the years

A look back at some of the pups that have served as "First Dog", a loyal companion to the President of the United States, as well as other furry companions. (Yahoo News)

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