NATURE | The Gorilla King | Gorilla Challenger | PBSNormally Titus is a calm and distinguished leader. However, recent challenges to Titus’ rule by his rival, Kuryama, have the entire group of gorillas on edge. Could this be the climax of Titus’s epic reign as “The Gorilla King”? Part of the 26th season of the Peabody and Emmy award-winning series produced by Thirteen/WNET New York for PBS, “The Gorilla King” premieres Sunday, April 20, at 8 p.m. ET (check local listings). Major support provided by Canon U.S.A. Inc., Toyota, and the Corporation for Public Broadcasting. For more information, visit http://www.pbs.org/nature