Krazy Kat Bugologist (1916)

George Herriman's Krazy Kat was a phenomenon of the popular culture of the first part of the twentieth century. The comic strip spun off a few animated shorts, which apparently never really caught on, but they survive as fascinating artifacts of the era. This cartoon is so old that many of what we think of as the normal conventions of cartoons are absent: the plot is nonexistent, the pacing is slow, the drawings are sometimes rough and the backgrounds short on detail. So it's as such an artifact that it's best appreciated. The music is a recent addition, and adds a great deal of emphasis to the action.