Which cartoon cat did Pat Sullivan create?

Patrick Peter "Pat" Sullivan (22 February 1885 – 15 February 1933) was an Australian-American cartoonist, pioneer animator, and film producer best known for producing the first "Felix the Cat" silent cartoons.

As Mickey Mouse was gaining popularity among theatre audiences through sound cartoons by late 1928, Sullivan, after years of refusing to convert Felix to sound, finally agreed to use sound in Felix's cartoons. Unfortunately, Sullivan did not carefully prepare this process and put sound in cartoons that the studio had already completed. By 1930, Felix had faded from the screen. Sullivan relented in 1933, and announced that Felix would return in sound, but died that year before production began.

"Felix the Cat" is a funny-animal cartoon character created in the silent film era. The anthropomorphic black cat with his black body, white eyes, and giant grin, coupled with the surrealism of the situations in which his cartoons place him, combine to make Felix one of the most recognized cartoon characters in film history. Felix was the first character from animation to attain a level of popularity sufficient to draw movie audiences.