Where else can you visit polar ice caps, a tropical forest, the African savanna and a jungle all in one day? The zoo is a state of the art habitat featuring more than 3,500 animals representing 600 species. Visit with sloths, tree frogs, and a moray eel at the indoor ''Tropical Discovery'' exhibit. Or wander through the seven-acre ''Primate Panorama Exhibit''. From cold climate penguins to tropical flamingos, ''Bird World'' will inspire your appreciation of winged things.