Rodeo King and the Senorita is a 1951 American Western film directed by Philip Ford and written by John K. Butler.
The film stars Rex Allen, Mary Ellen Kay, Buddy Ebsen, Roy Barcroft, Tristram Coffin and Bonnie DeSimone.
Steve Lacey plans to replace him in management and in the act, so he is irate at learning Rex Allen is going to be the show's new star.
But when another accident results in a broken leg for Koko that could prove fatal for the horse, Rex and his sidekick Muscles Benton suspect foul play.
After a lab analysis proves the chicanery involved, Foster shoots a sheriff, but Rex manages to make sure the guilty parties both end up behind bars.