Continuity mistake: When Droopy is in Reginald Fox's lair, Reginald gives him a fake bone with a lit firecracker in it. Droopy then goes outside, and when he shows the other hunting dogs the bone, the other dogs fight over it and one of them puts the bone in his mouth. When Droopy asks the other dogs which of them took his bone, the bone which is one of the other dog's mouths does not appear in the shape of a bone around his mouth until he shakes his head "No" and then the firecracker explodes.
Character mistake: In Frank Sinatra's scene in the taxi cab, when the girl is singing "Come Up to My Place," he rolls the cab window down and when he rolls it back up, he catches the front of his hair (the quiff) and has to roll the window back down to release it.
Other mistake: The calendar on the wall in Porky's kitchen shows April as having 31 days instead of 30.
Continuity mistake: Throughout the cartoon, Giovanni Jones's hair is blonde, but when he emerges from the rubble at the end of the concert, his hair is now reddish.
Continuity mistake: When the mouse (hidden in a vase) tiptoes on the table at the start of the short, the bread on the plate is initially pointing up, but in the next shot it is pointing down.
Visible crew/equipment: After the opening credits and intro at the start, in the first shot, just before the 'Britton and Sons Hats' glass door begins to open inward, the reflection of the camera and cameraman can be seen on the glass surface. (00:01:40)
Continuity mistake: When Spike grabs Tom's whiskers and threatens him, the background behind them changes from a fence to blue sky between shots.
Continuity mistake: When we first see the tree hut at the start of the cartoon, you can see there is nothing by the top left corner of the window, but when the camera pans in on the hut, a blue piece of paper has appeared.
Continuity mistake: Mrs Waggett brings in a tray with cups of tea on it while her husband is on the phone, reporting the sinking of a ship that contained hundreds of bottles of whisky. Mrs Waggett puts the tray on the left side of the screen, then, taking two cups with her, moves to the right of screen and that's where she stays when her husband finishes talking on the phone and, amazingly, the tray that was on the left side is now in her hands, without her moving to the left side to collect it.
Continuity mistake: When the bee kicks Pluto from behind, you can see that Pluto's tail is underneath him but in the next shot his tail is right behind him.
Continuity mistake: When we see "Grandpa's Folly" being 'scratched' in his starting box, the box has no door in front of it, but when we see the boxes at the start of the race in the next shot, a door has suddenly appeared.
Continuity mistake: When Dale falls over backwards when he sees the large walnut in front of him, there are three walnuts behind him that change position between shots.
Continuity mistake: When the City Wolf hits the Country Wolf with his baseball bat, the bat he is holding has an oval shape on it. When the City Wolf says "Control yourself, cousin!" in the next shot, the oval shape has disappeared.
Continuity mistake: When the delivery man comes to the door with Porky's canary (Charlie Dog), the front door handle has a keyhole with it, but when Porky throws Charlie out of the house, there is no keyhole.
Continuity mistake: Bill Kirby enters the bar. He asks Bob the waiter about his wife. There's a cut during this brief exchange, and the girl sitting at the table in the background changes position suddenly (she was browsing a magazine, now she is holding it still and fully open). (00:02:35)
Continuity mistake: When Bugs deals out the cards on the table, there are initially 12 cards but in the next shot they have increased to 16.
Continuity mistake: During the poker game, the Colonel says "I've got five aces" and he lies down his cards in front of him. You can see that next to the Colonel there is half a coin and a pack of playing cards. When Bugs says "I've got six aces, sir." he takes the half-coin away from the Colonel, but the Colonel's cards and the pack of playing cards have disappeared.
Continuity mistake: In a full view of the oven, inside the oven door the chicken's legs are white, but in the next shot, the legs are now brown.
Continuity mistake: When the bee sees Donald's eyes in front of him, you can see there is nothing behind him on the table he is walking on, but in the next shot a wooden box appears out of nowhere.
Continuity mistake: When the millionaire is addressing Spike and Droopy at the beginning of the cartoon, you can see his briefcase is at the right hand corner of the table. In the next shot, the briefcase is now in front of the millionaire.