He is probably best known as the voice of Disney's Goofy and the original Bozo the Clown, a part he played for a full decade beginning in 1946. He also provided the voice for Practical Pig, the pig who built the "house of bricks" in the Disney short Three Little Pigs, as well as both Sleepy and Grumpy in Snow White and the Seven Dwarfs, and the barks for Pluto the dog. Colvig worked for not only the Disney studio, but also the Warner Bros. animation studio , Fleischer Studios (Bluto, Gabby), and MGM, where he voiced a Munchkin in The Wizard of Oz.
Mickey's Grand Opera
1936
The Wizard of Oz
1939
Sleeping Beauty
1959
Snow White and the Seven Dwarfs
1938
Hop and Go
1943
The Wise Little Hen
1934
Alice in Wonderland
1951
Mail Dog
1947
Three Little Pigs
1933
African Diary
1945
The Goofy Adventure Story
1957
Rescue Dog
1947
Canine Caddy
1941
The Legend of Coyote Rock
1945
On Ice
1935
Barnyard Olympics
1932
Goofy Gymnastics
1949
Dog Watch
1945
How to Be a Sailor
1944
Elmer Elephant
1936
Camping Out
1934
Lonesome Ghosts
1937
The Tortoise and the Hare
1935
The Worm Turns
1937
The Simple Things
1953
Saludos Amigos
1942
The Legend of Sleepy Hollow
1949
On Vacation with Mickey Mouse and Friends
1956
Food for Feudin'
1950
Pluto's Christmas Tree
1952
Three Little Wolves
1936
Mickey's Delayed Date
1947
The Adventures of Ichabod and Mr. Toad
1949
A Feather in His Collar
1946
Raggedy Ann and Raggedy Andy
1941
Hawaiian Holiday
1937
Mickey in Arabia
1932
Mickey's Orphans
1931