Continuity: In the original Shaggy Dog from the 1960's, the older son is turned into a dog. He goes into his bedroom and takes out his PJ's from the bureau drawer, leaving the drawer open. He goes into the bathroom to put on the PJ's. When he comes out of the bathroom, the drawer in the bureau is closed.

Continuity: In the scene when Diane is talking to her husband in the office she slams two heavy books on the table and one slides off of the other, but then they show the books and they are piled neatly on the desk.

Continuity: Dr. Kozak enters the lab when Shaggy has the blood tube, and his hands are at his side, but in the next shot, his hands are up by his face.