Trigger made an early appearance as the mount of Maid Marian, played by Olivia de Havilland in The Adventures of Robin Hood (1938). A short while later, when Roy Rogers was preparing to make his first movie in a starring role, he was offered a choice of five rented "movie" horses to ride and chose him. Rogers bought him eventually in 1943 for his quickness of both foot and mind. Trigger learned 150 trick cues and could walk 50 feet on his hind legs (according to sources close to Roy Rogers). They were said to have run out of places to cue Trigger. Trigger was ridden by Rogers in many of his motion pictures, becoming much loved by the youthful audience that saw him on film and in Rogers' 1950s television series with his wife Dale Evans, who rode her trusty buckskin Quarter Horse Buttermilk.
Melody Time
1948
South of Caliente
1951
Sunset Serenade
1942
Utah
1945
Under Nevada Skies
1946
Out California Way
1946
Bad Man of Deadwood
1941
Man from Music Mountain
1943
Ridin' Down the Canyon
1942
Rodeo Dough
1940
Grand Canyon Trail
1948
Bells of Rosarita
1945
The Adventures of Robin Hood
1938
Bells of San Angelo
1947
Roll on Texas Moon
1946
Heldorado
1946
Hollywood Canteen
1944
Alias Jesse James
1959
Trigger, Jr.
1950
Cowboy and the Senorita
1944
Sheriff of Tombstone
1941
Under California Stars
1948
Son of Paleface
1952
Jesse James at Bay
1941
Home in Oklahoma
1946
Hands Across the Border
1944
My Pal Trigger
1946
Man from Cheyenne
1942
Idaho
1943
Heart of the Golden West
1942
Rainbow Over Texas
1946
Apache Rose
1947
Red River Valley
1941
Silver Spurs
1943
Sunset in El Dorado
1945
San Fernando Valley
1944
Song of Arizona
1946
In Old Amarillo
1951
South of Santa Fe
1942
In Old Cheyenne
1941