Other mistake: An antenna can be seen on the building above the grain warehouse.
Other mistake: In Gene Kelly's 'Singing in the Rain' sequence, the taps he makes do not match up with the actual movements of his feet - they are much more complicated than the steps he makes. Since one can't tap dance in wet loafers, Kelly had to do the dance in the studio, and the taps were added into the picture. He apparently got a little overzealous.
Continuity mistake: During the extended fight scene, Will Danaher and Sean Thornton go crashing into a hay stack. As they emerge, they announce to the crowd that they are going to fight by the Marquis de Queensbury Rules. As they make the announcement, Sean Thornton's back is covered in hay. As he turns, the camera cuts to follow him, and there is instantly no hay on his back.
Continuity mistake: When Sam points his gun at Bugs at Fort Knox, he says "But I can't take any chances!" and throws away the gun. In the next shot, the gun is back in his hand again.
Other mistake: During the car chase an Indian shoots an arrow that bounces off the car's license plate and comes back and hits the Indian. But a second before the arrow hits the Indian you can see him sitting on his horse with his eyes closed and a look of pain on his face as though the arrow had already hit him.
Visible crew/equipment: When Ugolin is chasing the rabbit you can see a crewmember duck behind a bush.
Continuity mistake: When the green devil recalls the time Tom serenaded another girl with his big bull fiddle, his whiskers disappear for a moment.
Continuity mistake: When we see the dog pound proprietor sitting at his desk at the start of the cartoon, you can see the telephone has a cord attached to it. When he picks up the phone, the cord disappears.
Revealing mistake: When the Prince and Princess are catapulted over the wall of the Giant's castle, you can see their shadows on the "sky" above the wall; the sky is a studio wall painted blue.
Continuity mistake: In this scene we see a flight of Navy Corsair fighters leaving the deck of an aircraft carrier on a training run. While in the air a close up shot of the flight leader's cockpit reveals that the aircraft in the background have changed into Grumman Wildcat fighters. When they make their attack run it's back to Corsair fighters with no sign of the Wildcat fighters.