He joined Fleischer Studio in 1931, where he worked on Betty Boop, Popeye the Sailor, and many other shorts, as well as Fleischer's two feature-length animated films. Tendlar stayed on at Famous Studios after Paramount Pictures foreclosed on Fleischer and reorganized the company into Famous Studios. Tendlar was promoted to director at Famous Studios in 1953 (he also directed a Noveltoon "A Self-Made Mongrel" in 1945).
He joined Fleischer Studio in 1931, where he worked on Betty Boop, Popeye the Sailor, and many other cartoons, as well as Fleischer's two feature-length animated films. Tendlar remained with Famous Studios after Paramount Pictures took over Fleischer and reorganized it into Famous Studios. Tendlar was promoted to director at Famous Studios in 1953 (he also directed a Noveltoon "A Self-Made Mongrel" in 1945).