Doug Takes a Hike / Doug Rocks - S1-E4
Continuity mistake: When Roger is dancing in Skeeter's yard, he changes color.
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 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)
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'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
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
Continuity mistake: Doug's Magic Act: When Doug and Patti are sitting outside the magic shop handcuffed to each other, in the shot where Patti tells Doug that she likes being around him best of all, the chain is not visible between them, even though they are supposed to be handcuffed. The chain reappears in the following shot. (00:21:10)
Doug's Bum Rap / Doug & Patti Sittin' in a Tree - S4-E2
Continuity mistake: Doug and Patti Sittin' in a Tree: Throughout the beginning scene where Doug and Patti are talking, the beet that is next to Doug's sandwich disappears, reappears, and disappears again. (00:12:12 - 00:12:50)
Doug and the Weird Kids / Doug's Behind The Wheel - S3-E6
Continuity mistake: Doug's Behind the Wheel: When Judy parallel parks the car, and Doug tells her that she just parallel parked, both of their seatbelts are on. When Judy comes out of the car, their seatbelts are suddenly off. (00:21:56)
Doug Graduates / Doug's Bad Trip - S4-E11
Continuity mistake: Doug's Bad Trip: When the Funnies' car gets stuck in mud, Phil says he saw a gas station 10 miles back, and walks out of the car to go there. When Doug comes out of the car and follows him, the mud around the car is gone. When the Funnies try to push the car out, it's back. (00:21:46)
Doug's Derby Dilemma / Doug's On His Own - S2-E6
Continuity mistake: Doug's On His Own: When Doug talks to Skeeter on the phone, as he says, "Well, at least our phones are working," the 0 button on his phone is missing. In the next shot of the phone, the button is back. (00:18:13)
Doug Throws a Party / Doug Way Out West - S4-E10
Continuity mistake: Doug Way Out West: When Doug tells the kids that he used to ride horses all the time when he was younger, the flyer in Patti's hand disappears, then reappears. (00:13:42)