The Cat in the Hat (TV special) stopped working on Seuss projects also. DePatie and Freleng were credited together as executive producers, while Jones was credited as producer with Seuss (under his actual name). For the next three Dr. Seuss animation specials, Freleng and Seuss (again using his real name) were credited as producers, although separately. DePatie–Freleng animated a new Cat in the Hat Productions logo for this special, which would be used in the next three specials. The pace and rhyming sequences of several of the songs (particularly "Calculatus Eliminatus") led many to believe that they were composed by Sherman, since they closely resemble his earlier
The Grinch Grinches the Cat in the Hat died a few months before this special had aired. Boris Karloff, the original voice of the Grinch, had died in 1969), while Mason Adams took over voicing the Cat in the Hat from the late Allan Sherman, who died in 1973. Since Friz Freleng was absent from production on "The Pink Panther" special "" due to his departure from DePatie–Freleng Enterprises to return to Warner Bros. Animation, this was the only other fully animated DFE production to be made by Marvel Productions and one of the last DFE cartoons Freleng was involved in. The special was first released on VHS