May 6, 2014 6:32 pm Zoo Lion Cubs Pass Important Agility Test News4’s Zachary Kiesch was at the National Zoo when four African lion cubs were put to a swim test. Local 3:24 The origins of Cinco de Mayo 2:48 DC Irish pub The Dubliner celebrates 50th anniversary 1:59 The Weekend Scene: Maryland Day, Celtic Festival & more 2:47 How exactly DO you farm an oyster? 2:20 French restaurant opens in historic 14th Street building that housed former bank