Britain's Catherine, the Duchess of Cambridge, (L) helps Luis Lee, aged 8, with his painting during an official visit to the Art Room facilities at Rose Hill Primary School in Oxford, central England, on February 21, 2012. It is a secret that Britain's royals have kept buried for months, but Prince William's wife Catherine on Tuesday finally revealed name of the couple's new puppy: Lupo. The Duchess of Cambridge, let the name slip when she was speaking to children during a visit to a primary school in Oxford, central England, her official office Clarence House confirmed on Tuesday. AFP PHOTO/Steve Parsons/POOL (Photo credit should read Steve Parsons/AFP/Getty Images)