Rin Tin Tin – Law of the Wild
There are four Rin Tin Tin serials. This one is actually titled “The Law of the Wild.”
Rex, a wild stallion, and Rinty, a police dog, are pals. Their master , John Sheldon, is framed for murder, and Alice Ingram plans to race Rex for money to pay for John’s legal defense. Starring Bob Custer and Rin Tin Tin. 2 DVD Set – 12 Chapters (1934).