Trivia: When the Nazi General pushes a subordinate out of the blimp, he yells a Wilhelm scream.
Trivia: When Sylvester goes to see Witch Lezah, the other names on the directory are of real life therapists (although Cecile Willis' name is reversed).
Continuity mistake: When Granny tells Sylvester to stop chasing Tweety Bird, he comes to a stop and Tweety Bird keeps going and is ahead of him. But in the next shot, Tweety is now behind Sylvester (between Sylvester and Granny), however, there's not enough time for him to fly back that far (or even circle around), and we would have seen him do it.