The three male cheetahs that left the National Zoo’s D.C. campus in 2009 returned in November and are now on exhibit In Animals, Science & Nature, Video / 5 January 2011 Related posts: With too few males, blue crab population may be put at risk New finding may enable scientists to bolster genetic diversity of captive cheetah population Clouded leopard cubs born at National Zoo’s Front Royal campus on Valentine’s Day Antarctic Treaty Summit, Nov. 30-Dec. 3, 2009, Smithsonian, Washington, D.C. Tags: animal births, conservation, endangered species, mammals, Smithsonian's National Zoo