An American cowboy living in Mexico discovers his cattle is being eaten by a giant prehistoric dinosaur.
| Actor | Role |
|---|---|
 Guy MadisonJimmy Ryan | Jimmy Ryan |
 Patricia MedinaSarita | Sarita |
 Carlos RivasFelipe Sanchez | Felipe Sanchez |
| MMario NavarroPanchito | Panchito |
 Pascual García PeñaPancho | Pancho |
 Eduardo NoriegaEnrique Rios | Enrique Rios |
 Julio VillarrealDon Pedro | Don Pedro |
 Lupe CarrilesMargarita | Margarita |
 José ChávezManuel | Manuel |
 Margarito LunaJose | Jose |
 Roberto ContrerasCarlos | Carlos |
 Manuel ArvideMartinez | Martinez |