Canned Feud (1951)

Continuity mistake: When Sylvester opens the final cupboard door and finds tins of food in it, you can see that he is holding on to the door at the end of the shot, but as the shot changes he now has his arm by his side.

Trivia: When Sylvester opens the letter box, he sees a milk bottle with a note in it. The note is signed by "Mrs. Champin" - a reference to the Looney Tunes animator Ken Champin.