The Wolf Dog is a 1933 American Pre-Code Mascot film serial directed by Colbert Clark and Harry L. Fraser and starring Frankie Darro and Rin Tin Tin, Jr.

The plot concerns a young boy becoming the heir to a fortune and a villain attempting to take it from him.

He also starred in two other serials, The Law of the Wild (1934) and The Adventures of Rex and Rinty (1935).

[1] Youngster Frank Courtney discovers that he has inherited control of a Los Angeles shipping line.

The current president, Norman Bryan, does not want to lose his position and conspires to have the boy killed.