Continuity mistake: When Sylvester sees the Daily Bugle newspaper, the front cover headline reads "Police Hunt The Cat." You can see the words THE CAT have nothing around them, but when we see a close-up of the newspaper in the next shot, inverted commas have suddenly appeared.
Continuity mistake: Doris picks up the phone and there's a cutaway shot on Johnny playing his guitar as he listens. The stockings Doris tossed at him are gone from the guitar head, but they are back when the phone call is over. (00:05:10)
Continuity mistake: When the Coyote tests his dart bomb, he lights it with a match in his left hand. But when he throws the dart bomb in the next shot, the match that was in his hand has gone.
Continuity mistake: When Sylvester and the dog realise their legs have been connected by a pipe in the junkyard, the position of their feet changes between shots.
Continuity mistake: When Sylvester has caught all of Speedy's friends, he puts them in the bottle and he is holding the flute in his hand. But when see Sylvester a little later on, the flute has gone, and after Speedy has rescued one of his friends, Sylvester has the flute again.
Continuity mistake: When Mr Stringer picks up Miss Marple from Akinthorpe Hall in his car, Alexander, as a harmless joke, has tied a string of old shoes and empty cans to the car and put a sign 'Just Married' on the back of the car. As the car first drives off, the sign is seen falling away, but when we get a different shot, the sign is well secured.