The Adventures of Rex and Rinty (1935) is a Mascot film serial starring the equine actor Rex (“The King of Wild Horses”) and canine actor Rin Tin Tin, Jr..

Cast:
Rex the king of wild horses as himself
Rin Tin Tin, Jr. as Rinty
Kane Richmond as Frank Bradley
Norma Taylor as Dorothy Bruce
Mischa Auer as Tanaga
Smiley Burnette as Jensen
Harry Woods as Crawford
Pedro Regas as Pasha
Hooper Atchley as Debor
Wheeler Oakman as Henchman Wheeler
Victor Potel as Kinso, Royal Guard Commander
Allan Cavan as Mr. Bruce