Filmography13 titles
| Year | Title | Character | Age at release |
|---|---|---|---|
| 1954 | Phantom StallionMovie | Rex's Horse | — |
| 1953 | Old Overland TrailMovie | Rex's Horse | — |
| 1953 | Down Laredo WayMovie | Koko, Rex's Horse (as Koko the Miracle Horse of the Movies) | — |
| 1953 | Shadows of TombstoneMovie | Rex's Horse | — |
| 1953 | Iron Mountain TrailMovie | Koko | — |
| 1953 | Red River ShoreMovie | Rex's Horse | — |
| 1952 | Colorado SundownMovie | Miracle Horse of the Movies | — |
| 1952 | Border SaddlematesMovie | Koko - Rex's Horse | — |
| 1952 | Old Oklahoma PlainsMovie | Koko | — |
| 1952 | South Pacific TrailMovie | Koko | — |
| 1951 | Rodeo King and the SenoritaMovie | Koko - Rex's Horse | — |
| 1951 | Utah Wagon TrainMovie | Koko, Rex Allen's Horse (as Koko the Miracle Horse of the Movies) | — |
| 1940 | TyphoonMovie | Koko | — |