CotD: The last collaboration between director Tex Avery and animator Preston Blair was on “Señor Droopy”.
Señor Droopy (1949) — Droopy Theatrical Cartoon Series
Droopy fights a bull and a wolfy bullfighter for the hand of a (live-action) senorita. He wins the bullfight and gets his girl, actress Lina Romay.
Come see “Señor Droopy” on video at Big Cartoon DataBase