My Pal Trigger

When Gabby Kendrick refuses to breed his prize stallion Golden Sovereign to Roy Rogers' mare, fate intervenes — the horses run off, a rustler's bullet kills the Sovereign, and Roy is blamed and jailed. A year later he returns with Trigger, the Sovereign's son, determined to clear his name. Roy Rogers, Dale Evans, and Gabby Hayes star in the film Republic used to explain how the smartest horse in the movies came to Roy. It is in the public domain after its copyright was not renewed.