Doug's Lost Weekend / Doug's Lucky Hat - S2-E13
Other mistake: Doug's Lost Weekend: When Doug is walking inside Computer Junkie at the beginning, notice how the "J" in "Junkie" on the glass rotates a little to the left mid-shot. (00:01:43)
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)
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 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 Great Beet War / Doug's Magic Act - S3-E13
Other 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
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 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'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 Fat Cat / Doug and Patti P.I. - S3-E1
Other mistake: Doug's Fat Cat: After Stinky is revealed to be a mother, there is a shot of two of the kittens playing with each other. The two kittens keep turning into the opposite kitten repeatedly (you can tell because they keep flashing opposite colors), indicating that the animation is simply looped over and over. (00:11:14)
Doug's Fat Cat / Doug and Patti P.I. - S3-E1
Other mistake: Doug's Fat Cat: When Doug imagines himself reporting Stinky on the phone, when Stinky is chasing Porkchop, her tail is layered over the wall in front of her. (00:02:15)
Doug is Quailman / Doug Out in Left Field - S1-E12
Other mistake: Doug is Quailman: When Doug, as Quailman, gives everyone's brains back and they start cheering, the computer and boy behind Skeeter are layered over him for one frame. (00:09:24)
Doug is Quailman / Doug Out in Left Field - S1-E12
Other mistake: Doug Out In Left Field: When the kids are carrying Patti at the end, there is a boy behind Doug whose blue shorts keep flashing green, and his light green hair keeps flashing dark green. In the next shot, his hair stays dark green. (00:22:21)
Doug's Doodle / Doug's Runaway Journal - S1-E10
Other mistake: Doug's Doodle: At the end of the episode, when Doug imagines himself as Smash Adams driving out of the classroom, right before he takes off, his car is layered over the desk in front of it. (00:22:36)
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 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 Takes a Hike / Doug Rocks - S1-E4
Other mistake: Doug Rocks: When Doug and Skeeter win the contest to see The Beets, when Roger says, "Gee Funnie, I guess even a loser like you gets lucky once in a while," the logo on Roger's shirt is reversed. (00:17:23)
Doug and the Yard of Doom / Doug's Garage Band - S3-E12
Other mistake: After the "Think Big" number, Doug writes an idea down in his journal. There are a brief couple of shots where the edge of the animation cel is visible. It is a white line that disappears.
Doug Takes the Case / Doug's Secret Song - S2-E1
Other mistake: The framing of this entire episode is such that the edge of the animation cels is visible. Noted on Paramount+.
