Ain't She Tweet (1952)

Continuity mistake: At the beginning of the cartoon, you can see that the top part of Tweety's cage is small but in the next shot has increased in size.

Trivia: When Sylvester picks up a brick and says "Laugh this off!", there is a building beside him which says "I. Wyner Co." - a reference to the Warner Brothers background artist Irv Wyner.