Continuity mistake: When the lion roars at the sleeping cat, trying to wake it, the hair in his mane next to his right hand keeps flickering in and out of frame and existence. (00:04:30)
Continuity mistake: When Goofy is standing by the door frame and says "I ain't scared of no ghosts" he has three fingers on the outer frame, but when we are in the bedroom in the next shot, his fingers are now on the inner frame.
Continuity mistake: When lawyer Goodwill is in the secret laboratory, he picks up a bottle that has "Jekyll and Hyde Juice" written on the label, but when we see him with the bottle in the next shot, the words have disappeared.
Continuity mistake: When we see the animals change seats at the start of the cartoon, you can see there is an aisle in the middle of the theatre, but when the show begins in the next shot, the aisle has disappeared.
Continuity mistake: When Porky arrives home, you can see a window looking outside to the right of the front door, but when Porky shoots the man upstairs a second time, the front door now leads to a hallway with a staircase.