Two Sumatran tiger cubs took a brisk doggy paddle at the Smithsonian’s National Zoo today and passed their swim reliability test. The male and female cubs, named Bandar and Sukacita (SOO-kah-CHEE-tah), were born at the Zoo Aug. 5. All cubs born at the Great Cats exhibit must undergo the swim reliability test and prove that they are ready to be on exhibit. Bandar and Sukacita were able to keep their heads above water, navigate to the shallow end of the moat and climb onto dry land. Now that they have passed this critical step, the cubs are ready to explore the yard with their mother, 4-year-old Damai.