Male Sumatran tiger cub Bandar is tossed into a moat by Smithsonian National Zoo curator of great cats and bears Craig Saffoe (R) to perform in a swim test for the animal in Washington November 6, 2013. Two Sumatran tiger cubs born August 5 were tested today to have the ability to keep their heads above water, navigate the shallow end of the moat, and possess the strength and ability to climb onto dry land. REUTERS/Gary Cameron (UNITED STATES - Tags: ANIMALS ENVIRONMENT)