Continuity mistake: When Max is ready to tell the family that he isn't the vandal, the grill is upside-down. Also, when Barb asks if the family if they wanted egg kabob their family picture is upside-down. When Max is grounded in his room, his Dark Mayhem poster is upside-down. When the TV says that the angry mob is approaching it's upside-down also when the angry mob is inside the house the penguin butler statue can be seen upside down This happens a few more times throughout the episode.
Plot hole: It turns out that the Venus Fly Trap ate Dr. Collosso, but this doesn't make sense for a few reasons. 1. There's no way that it could've opened the kennel without completely destroying the door. 2. The shot was off it for only 3 seconds, it couldn't have eaten him in that amount of time.