Doug Takes a Hike / Doug Rocks - S1-E4
Continuity mistake: When Roger is dancing in Skeeter's yard, he changes color.
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 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)
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'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 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 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 Can't Dig It / Doug Didn't Do It - S1-E5
Other mistake: Doug Can't Dig It: When Doug imagines Judy performing at the school, as Judy says, "My soul throbs," her right sleeve turns purple twice. (00:02:52)
Doug Can't Dig It / Doug Didn't Do It - S1-E5
Other mistake: Doug Can't Dig It: After Judy finishes her performance in Doug's imagination, when the curtains close behind her, she is layered behind them for a split-second. (00:03:19)
Doug's Birthday Present / Doug's Fan Club - S4-E5
Other 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)
Doug's Bum Rap / Doug & Patti Sittin' in a Tree - S4-E2
Continuity mistake: Doug and Patti Sittin' in a Tree: When Patti asks Doug if he would like to go see a movie, her bag is in front of her. Two shots later, it's further away from her, and it changes position. (00:12:21)
Doug's Bum Rap / Doug & Patti Sittin' in a Tree - S4-E2
Continuity mistake: Doug and Patti Sittin' in a Tree: In the beginning, when Doug and Patti finish talking to each other, Patti walks away and leaves her bag on the table. When the other kids start laughing at Doug, it disappears. (00:12:45)
Doug's Bum Rap / Doug & Patti Sittin' in a Tree - S4-E2
Continuity mistake: Doug and Patti Sittin' in a Tree: When Patti walks up to Doug in the beginning, Doug's bag is next to his sandwich. Later on, when Patti asks him if he wants to invite someone else to the movie, the bag changes position. (00:12:21)
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 and the Weird Kids / Doug's Behind The Wheel - S3-E6
Other mistake: Doug's Behind the Wheel: When Judy parallel parks the car, as Doug tells her that she just parallel parked, he sticks his hand right through her seatbelt to touch her shoulder. (00:21:51)
Doug and the Yard of Doom / Doug's Garage Band - S3-E12
Continuity mistake: Doug's Garage Band: When Doug and Skeeter are performing their song in Doug's room, the trash can being used as a drum and lid being used as a cymbal are gray. When they finish playing, they become black. The handle on the lid on the trashcan also disappears. (00:13:55)
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)
Doug's in the Money / Doug's Sister Act - S4-E9
Other mistake: Doug's Sister Act: When Doug imagines himself as Smash Adams rising out of the floor in a chair, the animation cel code is visible at the bottom right corner of the screen. (00:17:05)
Doug's Halloween Adventure - S4-E12
Continuity mistake: When Doug, Skeeter, and Roger enter the haunted house and the wall starts moving towards them, they are standing to the side of the doors. In the next shot, they are standing in the center of the doors. (00:12:32)