Ken Maynard's exceptionally intelligent horse, Tarzan the Wonder Horse, is the star of this western about evil cowboy Steve Frazer (Welch) who gathers horses for slaughter, whose meat is sold to pet food manufacturers. The wild horse Tarzan frees the doomed horses from their corrals, and Frazer convinces the Sheriff that Tarzan is a threat and can be shot on sight. Local cowboy Ken Benson (Maynard) and rancher Pat Riley (Kennedy) work together to clear Tarzan's good name and put Frazier behind bars for his evil deeds.

Ken Maynard
as Ken Benson

Merna Kennedy
as Pat Riley

Niles Welch
as Steve Frazier

Roy Stewart
as Henchman Butch

Kate Campbell
as Aunt Martha

Bob Kortman
as Henchman Spike

Nelson McDowell
as Cowhand Slim

Jack Rockwell
as Sheriff

Hank Bell
as Hank - Cowhand

Bob Burns
as Bob - Rustler
CinemaSerf
No Johnny Weissmuller, nope - it’s not even Johnny Sheffield who is accused of rustling the horses. It’s another “Tarzan” altogether and he’s got four legs. What this especially bright animal does know, though, is just who is pinching the herds and so sets about freeing his brethren. Meantime, tha c...