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)
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 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 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 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
Continuity mistake: Doug is Quailman: When Doug tells Porkchop to sign his name on the comic book, his pencil is tucked in his ear. When Porkchop prints the page and they both shake hands, the pencil is gone. (00:02:00)
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 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)
