World’s Priciest Dog Costs $582,135 AOL News A black Tibetan mastiff with a plaintive expression not unlike the Cowardly Lion’s is believed to have broken the world record as the most expensive dog, The Times of London reported Thursday. A Chinese woman paid $582,135 for the pricey canine, far surpassing the $155,000 reportedly doled out by a Florida family earlier this year for a Labrador named Lancelot Encore. A woman, identified only as Mrs. Wang, poses on Wednesday with what i