Continuity mistake: When Dr Jerkyl is making a potion in his laboratory, he puts a drop of solution into the beaker and the potion turns yellow, but in the next shot the potion is now pink.
Continuity mistake: When Daffy is standing at the door of Dr Jerkyl's house, there is a doormat under him that disappears when he sees the door opening.
Continuity mistake: When Daffy sees Dr Jerkyl's house, he is holding a telegram in his hand that disappears when we see him in the next shot.
