Doug Gets His Ears Lowered / Doug On The Wild Side - S1-E8
Other mistake: Doug Gets His Ears Lowered: Doug tells Porkchop about his old barber, Big Al. In the flashback, Big Al wears a smock with his name patch and a pocket containing scissors, but the problem is Al's reflection is not reversed in the mirror. (00:01:50)
Doug Gets His Ears Lowered / Doug On The Wild Side - S1-E8
Continuity mistake: Doug Gets His Ears Lowered: When Joe invites Doug to his new barbershop for a free haircut, the shop's front door opens inward, but in the next shot, the front door has vanished. (00:09:40)
Doug's Christmas Story - S4-E13
Continuity mistake: After Porkchop saves Beebe from drowning, it then cuts to the crowd as Patti explains the dog was originally trying to keep Beebe away from the thin ice. In this overhead shot, Beebe is wearing both of her pink boots, but in the next shot Beebe's left leg is bandaged again as it should be. (00:20:35)
Other mistake: At Honker Burger, when Skeeter introduces Doug to Patti, the lower half of Doug's body and both of his arms are missing; the animation is incomplete. (00:20:55)
Doug En Vogue / Doug's Mail Order Mania - S4-E4
Continuity mistake: Doug En Vogue: While Doug is at the store, he tries to attain a new original look for himself. When he's looking at his reflection dressed as a rapper, the necklace with the word "RAP" is not a reversed image, but a moment later Doug's reflection is properly backwards as it should be. (00:07:55)
Doug Takes a Hike / Doug Rocks - S1-E4
Continuity mistake: When Roger is dancing in Skeeter's yard, he changes color.
Doug's Shock Therapy / Doug Is Hamburger Boy - S3-E11
Plot hole: Doug recalls previous years (in a flashback, where he was next to Skeeter at the window of the Honker Burger as they looked outside) of seeing the Hamburger Boy when Mr. Dink is confessing that he *was* Hamburger Boy. However, Doug has only been living in Bluffington for one year - this was his first summer there.
Doug to the Rescue / Doug's Cool Shoes - S1-E7
Continuity mistake: Doug's Cool Shoes: When Doug is buying shoes, the saleslady takes off Doug's sneaker and when it shows the shoebox, his other shoe is already in there.
Continuity mistake: Patti sings terribly in this episode. But in "Doug's No Dummy", she could sing perfectly.
Suggested correction: While it is shocking, one thing to consider is Patti is going through puberty. It's not just boys who need to relearn how to sing with puberty and can go from canaries to frogs; girls do too. Especially if they have not had proper training, and are aiming for notes they can no longer hit. Patti's at the right age. She may be going through the same thing.
Doug's Halloween Adventure - S4-E12
Continuity mistake: Skeeter, Doug, and Roger are all in line for the scary ride. There are a lot of people behind them. The park closes and the people behind them instantly disappear in a cut.
Doug is Quailman / Doug Out in Left Field - S1-E12
Continuity mistake: The baseball players on Patty's team appear out of nowhere near the beginning. She walks back to the bench in defeat and it's just Doug and Skeeter. A couple of seconds later there are a lot of people in the stands.
Doug's Cartoon / Doug's Monster Movie - S3-E8
Continuity mistake: There is a person holding a sign next to Judy. It says "No censorship." This sign changes. The word spacing is different in the closer angle. In the wide angle there is a noticeable space between the word censor and ship.
Doug to the Rescue / Doug's Cool Shoes - S1-E7
Continuity mistake: Patty's notebook disappears and reappears when she is being bothered by Roger in detention.
Continuity mistake: Patty's hair changes color many times throughout the episode. In some cases it's lighter, in other cases it's the normal color.
Doug's Servitude / Doug Rocks the House - S3-E2
Other mistake: Doug Rocks the House: When Doug tries to talk to Patti at her locker, after he gives the rock and marker back to the kid beside him, the kid's glasses lose their colour for one frame. (00:18:00)
Doug's Servitude / Doug Rocks the House - S3-E2
Continuity mistake: Doug Rocks the House: When Doug tries to talk to Patti at her locker, he gives the rock and marker back to the kid beside him, then turns to look at Patti. When the shot changes, his eyes are suddenly closed. (00:18:01)
Doug's Servitude / Doug Rocks the House - S3-E2
Continuity mistake: Doug Rocks the House: When Roger and his friends are throwing rocks at the house, there is a purple book in front of Roger, and two other books next to his friends. In the next shot, the purple book moves to the side of Roger, and it changes to yellow. A few shots later, it changes to orange. Then when Doug throws a rock at the house, the other two books change position, then disappear a few shots later. (00:11:58 - 00:14:11)
Doug's Great Beet War / Doug's Magic Act - S3-E13
Continuity mistake: Doug's Magic Act: When Doug tries to yank the handcuffs off and accidentally knocks the items out of his mirror cabinet, some of the items change colour, and some of the labels and designs on them change or disappear. A purple bottle also appears on the bottom shelf, which wasn't there in the previous shots. (00:17:35)
Doug's Great Beet War / Doug's Magic Act - S3-E13
Revealing mistake: Doug's Magic Act: When all the items fall out of Doug's mirror cabinet, a purple bottle falls out last, and it is incorrectly layered behind the other items on the floor. (00:17:39)
Doug's Birthday Present / Doug's Fan Club - S4-E5
Revealing mistake: Doug's Fan Club: When Doug and Skeeter walk into the cinema, Doug sees some empty seats, and they start running towards them. In the shot of them running past the movie screen, their heads are transparent. (00:17:38)