Come on, Tarzan (1932)

After her father dies Pat Riley (Merna Kennedy), returns home from an eastern board school and takes charge of the family horse ranch. She immediately has a spat with the ranch foreman Ken Benson (Ken Maynard). He is trying to convince her that the smooth-talking Steve Frazier (Niles Welch) has an hidden agenda for wanting to buy the ranch's ramada of broken wild horses. Turns out he does...he represents a company that makes dog food.