Continuity mistake: When Tom finds Butch in the fridge, he leaves the fridge door open, but after Jerry takes away the ham from Butch, he runs past the fridge and the door is now closed.
Character mistake: On the sign outside Dr I.Q. Hi's headquarters, the word "Stratosphere" is spelled "Stratopere."
Continuity mistake: When the Tasmanian Devil passes by the hamburger stall, you can see there is nothing next to the radio on the counter, but when we see a close-up of the radio in the next shot, there is now a mustard pot and a bottle next to it.
Continuity mistake: When the Coyote is pursuing the Road Runner at the start of the cartoon, he is holding a fork in his left hand and a knife in his right. But when we see the Coyote a few seconds later, he is now holding the knife in his left and the fork in his right.
Continuity mistake: When Egghead Jr. shows Foghorn Leghorn the formula for how he managed to dig him out of the ground, you can see that Egghead has nothing next to him, but in the next shot a spade has suddenly appeared.
Continuity mistake: When we see Norman standing by the desk in his boss' office, you can see there is nothing in front of the boss on his desk, but when we see the boss in the next shot, a piece of paper suddenly appears.
Continuity mistake: In this first Mr. Magoo animated short, Waldo is playing a four-string banjo. Throughout the cartoon, the number of strings keeps changing. Sometimes there are three and sometimes there are only two.
Continuity mistake: When Tom is tip-toeing past the gate at the start of the cartoon, Spike is sleeping and you can see there is nothing around his neck, but in the next shot a dog collar has suddenly appeared.
Continuity mistake: When Jerry orders the baby woodpecker out of his home, you can see that Jerry's right foot is facing sideways but in the next shot it is now facing straight.
Continuity mistake: When Daffy Duck is on the windowsill at Porky Pig's house, the windows are initially misted, but in the next shot they are now perfectly clear.
Continuity mistake: When the man is imitating the frog to the agent in the talent agency, he is initially holding his hat, and then throws his hands up into the air. When his hands come back down, the hat has disappeared.
Continuity mistake: Oliver Hardy is teetering at the top of a ladder which is in the back of Stan Laurel's car. Stan is driving west on Wilshire Boulevard when Oliver, and the ladder, fall into the street. Oliver gets back into the car but now is it inexplicably atop the streetcar tracks and facing the opposite direction.
Continuity mistake: When we first see the book that Bugs is reading at the beginning of the cartoon, there are words on the front cover and spine. In the next shot, the words have gone.
Continuity mistake: When Porky arrives home, you can see a window looking outside to the right of the front door, but when Porky shoots the man upstairs a second time, the front door now leads to a hallway with a staircase.
Continuity mistake: When the Wolf shakes the plastic surgeon, telling him to give him a new face, the surgeon's moustache disappears for a few frames. (00:05:30)
Continuity mistake: When we see Elmer Fudd reading his book at the start of the cartoon, you can see there is a lamp behind him, but when the camera pans in on Elmer in the next shot, the lamp is nowhere to be seen.
Continuity mistake: Oliver Jr. is soaked when he falls into the bathtub, but when he is boxing with Stan Jr. he now appears to be completely dry.
Continuity mistake: When Bugs Bunny is eating a carrot while standing by a table at Elmer Fudd's laboratory, you can see there is nothing in front of him, but in the next shot Elmer appears out of nowhere.
Continuity mistake: After Sam is hit in the face by the rock, the rock lands by Bugs' hole. When Sam returns with a spade and starts digging, the rock has gone.
Continuity mistake: At the end of the cartoon, Bugs is holding a blackberry pie and you can see that the background behind him is green, but when he says "I do'd it!" and pushes the pie into Ala Bahma's face, the background changes to yellow.