In 1935 Wolf, Eugster, and Culhane, moved to Walt Disney Studios. After working briefly in the Shorts Department, Wolf moved on to features. He was one of the animators of ''Pinocchio'' and ''Fantasia''. His final work at Disney was on ''Dumbo''.
Wolf left Disney after the 1941 strike. He briefly provided uncredited work for Tex Avery at MGM before being drafted during World War II. Wolf was assigned to the First Motion Picture Unit, a group of former Hollywood personnel who created short educational films for the American military. After the war, Wolf worked briefly for animator Rudolph Ising before forming his own company, Animedia Inc. Animedia produced animation for advertising and commercial films. The company also designed some of the costumes used at Walt Disney World, as well as animating segments for ''Sesame Street.''
Wolf folded Animedia in the 1970s in order to return to animation full-time. He produced several animated features for Hanna Barbera, including 1987's ''The Jetsons Meet the Flintstones''. He was Producer of ''Bobby's World'' for Film Roman, and was an uncredited Animator on ''Tom and Jerry: The Movie''. He retired from animation in the 1990s, but continued to provide freelance animation pre-production for Fred Wolf Films, commercial design, including developing mascots for the MGM Grand Hotel in Las Vegas. Wolf died in 2006 at the age of 95.