Rex

Rex, The King of Wild Horses

Rin-Tin-Tin Jr.

Rinty

Kane Richmond

Frank Bradley

Norma Taylor

Dorothy Bruce

Mischa Auer

Tanaga

Smiley Burnette

Jensen

Harry Woods

Crawford

Pedro Regas

Pasha

Hooper Atchley

Debor

Wheeler Oakman

Wheeler

Victor Potel

Kinso

Allan Cavan

Mr. Bruce

Al Bridge

Mitchell

Edmund Cobb

Jones

Charles King

Martin

George Chesebro

Anderson

Jack Rockwell

McDonald

Ralph Byrd

Forest Ranger Jerry Morton