The film is the fourth feature film based on a book by Dr. Seuss, the second fully computer-animated adaptation (the first one being Horton Hears a Who!), and the first to be released in 3-D.
The film was fully produced at the French studio "Illumination Mac Guff", which was the animation department of Mac Guff which was acquired by Illumination Entertainment in the summer of 2011 [REF].