Levitow briefly left Warner Brothers when he was drafted during World War II working on training films, in which during that time he met Stan Lee and became close friends with him. Levitow returned to the studio, working as an assistant animator for Ken Harris under the Chuck Jones unit, and he was later promoted to animator in 1950 and would receive his first animations credit in 1953 for the cartoon Wild Over You.
Levitow temporarily left Warner Brothers during World War II to work on training films, where he met Stan Lee and became close friends. He returned to the studio as an animator under Ken Harris's Chuck Jones unit, was promoted to animator in 1950, and received his first animation credit for Wild Over You in 1953.