(Disney, 1931) A very early model sheet for Pluto "The Pup," dated September 14th 1931, this is from the same year he changed from an unnamed bloodhound to a major character in Mickey Mouse cartoons. Model sheets like these were distributed at the Studio to ensure character consistency among animators. Measuring 11.5" x 15.75" overall, the model sheet is in good condition, intentionally cut in half through the middle, with pinholes, a pencil mark, and a small tear at the upper left from original production use.