Continuity mistake: Throughout the cartoon, there are pieces of white paper underneath the pad on Porky's desk that keep disappearing and re-appearing between shots.
Continuity mistake: When Spike tells Tom that he will "pound him to pieces" if he threatens Jerry again, you can see Spike has a collar around his neck. In the next shot, the collar has gone, and in the shot after that, it is back again.
Revealing mistake: When the mice are feeding the cat, the cat sits up and a mouse passes through his head.
Continuity mistake: When Stan opens the bedroom door and sends Oliver crashing to the metal bed frame, the newspaper which Stan is holding changes from his right hand to left hand between shots.
Continuity mistake: When we first see Bugs' home at the start of the cartoon, there is nothing around the hole. When the camera pans in on the hole, pieces of carrot have appeared.
Continuity mistake: When Jerry and one of the puppies hear Tom whistling during the thunderstorm, you can see that there is a newspaper by the puppy when he and Jerry look out from their shelter, but when Tom falls into the river, we cut back to Jerry and the puppy and the newspaper has disappeared.
Continuity mistake: When Calvin Q. Calculus has invented the portable hole, he says "Eureka!" and you can that there is a beaker on the desk, but in the next shot the beaker has disappeared.
Continuity mistake: When Porky is making his breakfast on the stove, the direction of the frying pan handle changes between shots.
Continuity mistake: When Porky Pig falls asleep in his boat, he is wearing a red shirt. In his dream, a big fish cuts off the red shirt to cook a now naked Porky. When the dream ends and Porky wakes up back on his boat, his red shirt is still missing, and he's still naked. He should have still had his red shirt on.
Continuity mistake: When Daffy steps out of the bus at the beginning of the short, he drops his suitcase on the pavement. When we see Daffy in the next shot, the suitcase has gone.
Continuity mistake: When Tom (dressed as a seal) performs "Yankee Doodle" on the horns at the circus at the end of the cartoon, the background behind him changes between shots.
Continuity mistake: When Bugs puts up a "Camp Here" sign near his hole, you can see there is nothing behind the sign, but in the next shot a tree has suddenly appeared.
Continuity mistake: When Jeannie is on the settee talking on the telephone, the cord is missing in some shots.
Continuity mistake: When we see a close-up of the meter, there is a box saying "10 Centavos for One Hour." The words were not in the box in the previous shot.
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: After Tom has torn up Jerry's diary, you can see that the pie is next the hole of Jerry's home, but when Jerry comes around the corner and sees Tom, the pie is now positioned near Tom's foot.
Continuity mistake: When Pluto sits on Mickey Mouse's top hat, the hat goes into the air and you can see behind Pluto there is a green armchair. But when the hat comes down on Pluto's head, the armchair is nowhere to be seen.
Continuity mistake: When we see Elmer reading his book at the beginning of the cartoon, the strap of his gun switches shoulders between shots.
Continuity mistake: When George is at the fridge and finds the chicken has been eaten, the door is open. But in a close-up of Tom in the next shot, the door is now closed, and in the shot after that, the door is open again.
Continuity mistake: When the mouse is serenading the female mouse with his guitar, she throws down a flower at him and there is only one leaf on the stem. But when Speedy Gonzales comes along and takes the flower, there are now three leaves on the stem.