Lassie - Episode #240 - "Shadrack" - Season 7 Ep. 21 - 02/05/1961

Cully plays a delighted host to his old regiment's Army mule, "Shadrack" when the mule is going to be honored at the regiment's meeting. When Shadrack suddenly escapes and begins rampaging all over the countryside, Culley and Timmy must find him to save the mule from being destroyed by the local sheriff.