His most famous song is arguably "Cruella de Vil" from the 1961 Disney animated feature One Hundred and One Dalmatians. That same year, he also wrote the story and new lyrics to sixteen tunes for the film Babes in Toyland. In later years, he wrote songs, stories, and did voice-over work for the PBS children's series Big Blue Marble, and well as working on a number of projects for television commercials. He also composed "When The Buzzards Return To Hinckley Ridge" for the 1969 Disney animated short, "It's Tough to Be a Bird", which went on to win the Academy Award for Best Short Subject in 1970. The song was sung by comedienne Ruth Buzzi. Leven was also the original voice of Snoopy, and was in Snap, Crackle, Pop commercials. He also wrote the Little Ranger Nature series for Disney in the 1960s. His work has been honored with two Emmy Awards and two Peabody Awards. A conservationist a…
movieThe Mouse and His Child
1977 · Ralphie (voice)
movieIt's Tough to Be a Bird
1969 · Songs
Physical Fitness and Good Health
1969 · Songs
movieThe Social Side of Health
1969 · Songs
movieSteps Towards Maturity and Health
1968 · Songs
movieScrooge McDuck and Money
1967 · Original Music Composer, Lyricist
movieThe Adventures of Bullwhip Griffin
1967 · Songs
The Joey Jingle Show
1967 · Joey Jingle
movieBackstage Party
1961 · Self, Lyricist
movieOne Hundred and One Dalmatians
1961 · Songs, Lyricist
movieNoah's Ark
1959 · Original Music Composer
tvThe Gerald McBoing-Boing Show
1956 · Music
Fight On For Old
1956 · Writer