Gibson, the California dog dubbed the tallest in the world by the Guinness Book of World Records, has died after a battle with bone cancer. The 7-year-old harlequin Great Dane from Grass Valley measured 7 feet, 1 inch when standing on its hind legs. Image: ‘Gibson’, the world’s tallest dog http://www.msnbc.msn.com/id/32394545/ns/health-pet_health/from/ET

