LONDON - The prime suspect in a royal whodunit has been cleared. Princess Anne's bull terrier Dotty didn't fatally maul a corgi belonging to Queen Elizabeth II shortly before Christmas, Buckingham Palace said Tuesday. Instead, the palace pointed the blame at one of Anne's other terriers, Florence. Media reports had identified Dotty, a dog with a violent past, as the culprit after Pharos the corgi was attacked at the royal family's Sandringham estate early last week. The corgi was badly injured and had to be put down. The incident prompted widespread speculation that Princess Anne would have to destroy Dotty,...