Between 1930 and 1955, the 'character' of "Rin Tin Tin" (though not all the original dog) was heard in three different radio series, beginning April 5, 1930 with The Wonder Dog, in which Rin Tin Tin did his own sound effects until his death in 1932 when Rin Tin Tin, Jr. took over. This 15-minute program was broadcast Saturdays on the Blue Network at 8:15 p.m. until March 1931 when it moved to Thursdays at 8:15 p.m. In September 1930, the title changed from The Wonder Dog to Rin Tin Tin. Don Ameche and Junior McLain starred in the series, which ended June 8, 1933. With Ken-L-Ration as a sponsor, the series continued on CBS from October 5, 1933 until May 20, 1934, airing Sundays at 7:45 p.m.