Each cartoon is under 30 minutes long and cel animated (with the exception of Gertie the Dinosaur). Seventeen of the selected films were produced for Warner Bros.'s Looney Tunes and Merrie Melodies series, ten of which were directed by Chuck Jones. All of the selected cartoons were created and released prior to 1960, except for the 1985 short The Big Snit (#25), the 1988 short The Cat Came Back (#32), the 1969 short Bambi Meets Godzilla (#38), the 1987 short The Man Who Planted Trees (#44), and the 1975 short Quasi at the Quackadero (#46).