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 the orange kitten and the brown kitten attend to Tom after they knocked him out by hitting his head on the ceiling, the eyebrow over the orange kitten's right eye disappears for a few seconds.
Continuity mistake: When the little dog throws items from the cabinet down to Spike, Spike catches two trays of glasses, a yellow vase with his right foot and a pink teapot with his left foot. But when Spike goes out of the house after a pepper pot lands on his nose, the vase and teapot have changed positions.
Continuity mistake: When Jerry is removing the nail from Spike's foot with a hammer, the distance of the wall behind Spike changes between shots.
Continuity mistake: In a close-up of Wile E Coyote's card, the card has "Wile E Coyote Genius" written on it, although in the previous shot the card was completely blank.
Continuity mistake: When Bugs is eating his carrot and the large hunting dog starts sniffing on the ground, there is nothing in the background. But in a close-up of Bugs in the next shot, trees have appeared.
Continuity mistake: When the captain lifts the lid and finds that Jerry has been eating his pancakes, you can see there is a knife behind the plate, but when we see a close-up of Jerry in the next shot, the knife has disappeared.
Continuity mistake: When Sam confronts Bugs underneath the box with the cord, you can see that there is nothing above the words "Pull", but in the next shot the words "Bomb Release" suddenly appear.
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.