Continuity mistake: When Foghorn Leghorn is relaxing in the barnyard, you can see there are two hens fanning him, but when a man on a bicycle arrives with a telegram, the hens with fans have disappeared.
Continuity mistake: When Tweety hits Sylvester on the paw with a mallet, the background behind Sylvester 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 the mouse pulls the lion's tail in the jungle, there is a tree in the background. When the camera closes in on the mouse in the next shot, the tree has gone, and in the shot after that, it is back again.
Continuity mistake: When Stan and Oliver are speaking to the ice-cream salesman, the amount on the till reads "05", but after Oliver has given him the money to pay for the ice-cream, the amount is now "10."
Continuity mistake: After Reginald Fox ties up the dog in the bag, his monocle is on his left eye, but when he answers the door in the next shot, the monocle is now on his right eye.
Continuity mistake: When Bugs pours red ink on Sam's head, he leaves the bottle on its side and there is a label saying "Ink" on it. In the next shot, the word "Ink" has disappeared.
Continuity mistake: When Elmer Fuddstone appears from his cave, there is a sign saying "Elmer Fuddstone" which was not in the previous shot.
Continuity mistake: When Tom finishes drawing up the blueprint, he draws a mouse and writes the word "Mouse" underneath it. When the blueprint comes to life after Tom lies down on the bed, the word "Mouse" is now underlined.
Continuity mistake: When Porky Pig arrives at the countryside, he places his easel next to a tree, but when we see a full view of Porky painting a little later on, the tree has gone.
Continuity mistake: When Bugs is telling the audience about Fearless Freep, you can see that the exit door has two rectangular slabs at the bottom, but when he goes to answer the door, the two rectangular slabs have been replaced with one large square slab.
Continuity mistake: When Sylvester is banging on the door of his apartment, there is no handle on the door. When his lady opens the door, a handle has appeared, and the door panels change.
Continuity mistake: When Donald's three nephews run to the door, Donald is standing the door and he has a money box in his hand. You can see on the front of the box there is a green rectangle, but in the next shot the rectangle has changed to "Bank Huey Dewey Louie."
Continuity mistake: When Steve Brody comes and sees the Swami after being thrown out of the gambling establishment, he has a plaster on his face. But when the Swami says "There's the answer" the plaster has gone, and in the next shot it is back on Steve's face again.
Continuity mistake: Throughout the cartoon, watch the handkerchief in the store manager's top pocket of his jacket. In some shots it is in the pocket; others it isn't.
Continuity mistake: When Duck Dodgers claims Planet X with his flag, you can see there is nothing next to him, but when Marvin the Martian comes along and makes his claim, an "X" tree has suddenly appeared.
Continuity mistake: When Casper the Caveman takes off his caveman's outfit to go swimming, he puts his outfit near the edge of the bank. After Daffy says that he can't swim, he reverses back onto the land and goes and collects his suit, but this time the suit is now much further away from the bank.
Continuity mistake: Laurel and Hardy are in a rented boat with two young women. Laurel is seated behind Hardy. They each have an oar over the left side of the boat and the boat is going in circles as they paddle. After a brief shot of James Finlayson staring at them from the dock, both men's oars are suddenly on the right side of the boat.
Continuity mistake: Coulson has just entered the supermarket and is holding 2 donut packages in each hand. Watch his left thumb. In the close-up shot it is on the 'D'. In the next shot, it is below the letter on the red band on the plastic wrap. (00:00:55)
Continuity mistake: When Granny is speaking to Sylvester at the start of the cartoon, you can see there is nothing is under Sylvester. In the next shot, a green pillow appears, and in the shot after that, it has disappeared.