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Cyrus adopted a fourth dog, a Rottweiler and Beagle mix named Happy, on May 1, 2012. He had been abandoned in front of a Walmart. She Tweeted this photo of him two days later, saying: 'Soakin up the sun with Happy :) I [love] this boy do much!'
( Photo / t.co/jGoTva0b / twitter.com/MileyCyrus)