There were a surprising number of shows in the Golden Age of Radio in which animals were the “stars”. This was actually convenient because the “star” didn’t have to be in the studio; the sound effects man could create the voice of the dog, cat or horse and do it on cue. The audience would never know the difference.

For The Adventures of Rin Tin Tin on the radio, the actual dog who starred in the movies was used. Rin Tin Tin was actually a dog found on a WWI battlefield who went on to star in several Hollywood movies. After the original German Shepard passed on, the name was given to a number of replacements.

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 7:45pm. The final radio series was broadcast on Mutual from January 2, 1955 to December 25, 1955 a 30-minute program heard Sundays at 5pm. Sponsored by National Biscuit for Shredded Wheat and Milk-Bone, the series featured Rin Tin Tin's adventures with the 101st Cavalry. The show starred Lee Aaker (born 1943) as Rusty, James Brown (1920–1992) as Lieutenant Ripley "Rip" Masters and Joe Sawyer (1906–1982) as Sergeant Biff O'Hara.-WikiPedia. Click here to read more about Adventures Of Rin Tin Tin