A film director and not Craig Serling was also an animator. This director wrote and directed "Brother Brat".
Francis Fredrick von Taschlein (February 19, 1913  May 5, 1972), better known by his stage name Frank Tashlin, was an American animator, screenwriter, and film director. 
Craig Serling is an American film director, film producer, screenwriter, and television editor known for multiple Primetime Emmy nominations for 'Outstanding Picture Editing for Non-Fiction Programming' and for his 2006 directorial debut feature film "Jam". 
Brother Brat (1944) is a Warner Bros. 
 Looney Tunes theatrical cartoon short, starring Porky Pig and directed by Frank Tashlin. 
