Continuity mistake: When Cleveland tells Junior to ask out Whitney, the door handles on the lockers in the background are on the left side of the locker. A few moments later, the handles are now on the right. (00:02:10)
Continuity mistake: When Cleveland is filling in the Chipotle Clam Wikipedia page, he goes to take a Slop Popper out of the fridge. All the Slop Poppers are in boxes, but in the next shot, Cleveland takes out the Slop Popper from outside of the box instead of inside the box. (00:05:10)
Continuity mistake: When the Chipotle Clam is in the microwave, you can tell nothing is under it. But when Cleveland takes it out of the microwave, a plate has suddenly appeared under it. (00:02:05)
Continuity mistake: On the menu board, mac and cheese is spelled correctly, then a few seconds later it's not. (00:09:30)
Continuity mistake: Cleveland has glass in his feet, but later in the episode, the glass is no longer there.
Continuity mistake: After Cleveland shoots the bear and the Huey Lewis like guy, the gun vanishes when he runs to Donna.
Continuity mistake: When Cleveland pulls the gun off his back, he also pulls of a piece of his skin off as well. When Cleveland and Donna kiss, the wound has vanished.
Continuity mistake: Cleveland goes outside in The Hurricane and gets blown all over the place. Yet reporter Dwayne Meighan is shown reporting the news outside in The Hurricane and is totally unaffected by it. (00:05:40 - 00:06:10)
Continuity mistake: Ernie's position keeps changing in relation to Junior at the first election. (00:04:50)
Continuity mistake: When Cleveland says "We were just at work and it was just so boring and humdrum...", Tori is looking at Cleveland and Donna. But when the video is played later, when Cleveland says "humdrum", Tori is looking away from Cleveland. (00:08:10 - 00:09:00)
Continuity mistake: When Donna "frapps" Cleveland, there is Frapp on the floor. Cleveland then slips on the Frapp and it disappears into the grass. Two seconds later, it reappears on the ground. (00:08:20)
Continuity mistake: When Cleveland gets hit with the American football when he walks into Waterman Cable at the start, he is standing next to the entrance door. In the next shot, he is suddenly standing at least 20 feet away from the door. (00:02:00)
Continuity mistake: Junior's inflatable scout pants go over the waterfall twice when he saves Rallo. (00:19:35)
Continuity mistake: The tree the scuba diver is impaled on changes size between shots when everyone runs out of the courthouse. (00:14:40)
Continuity mistake: When Cleveland and Donna notice Rallo has disappeared out the window, the window changes size between shots. (00:14:20)
There Goes El Neighborhood - S3-E9
Continuity mistake: When Junior and Cecilia are talking in the cafeteria, a boy with a blue waistcoat can be seen in the shots of Cecilia. The boy is eating a sandwich, and has a cup on the tray in front of him. In the shots of both Junior and Cecilia, the boy has no tray in front of him and is holding a milk carton instead of a sandwich. (00:08:45)
Continuity mistake: When Junior starts singing and Cecilia joins in making them a duet, the shot cuts to Cleveland. After this it cuts to a wide shot where we can see Cleveland doing nothing. In the next shot, he's suddenly finished drinking from a glass. (00:11:00)
Continuity mistake: Junior isn't able to fit through the door after returning from Choni's Cantina (the first time). Yet Junior is able to fit through the door in other episodes. (00:04:15)
Continuity mistake: When Cleveland notices the family and neighbours are there for his intervention, we can see Arianna and Holt standing right next to each other. In the next shot, Arianna is in visible but there's no sign of Holt. He was too close to Arianna to be out of frame. (00:09:35)
Continuity mistake: When Cleveland sees everyone in his bedroom, Arianna's bracelet changes which arm it is on between shots. (00:09:35)
Answer: In the episode "A Rodent Like This" Rallo discovers that Cleveland Jr. is actually a secret agent who is tracking down Tim, who is actually criminal. Jr. reveals that in order to get close he had to eliminate the real Cleveland Jr. luckily Cleveland doesn't pay attention so it was easy. Whether or not this is canon or not depends on the writers.