Revealing mistake: When the mice are feeding the cat, the cat sits up and a mouse passes through his head.
Continuity mistake: When Mr Pig is speaking to his baby son in the cot, the headboard of the cot is initially coloured white, but in the next shot it is now grey.
Continuity mistake: When Daffy gives Porky his card, Porky holds it with both hands but a close-up of the card shows him holding it with only one hand.
Continuity mistake: When we see Mr Meek with his axe at the beginning of cartoon, you can see there is nothing in the fence beside him, but in the next shot, wire fencing has suddenly appeared.
Factual error: In the scenes set during 1918, Clive is shown wearing a typical late 1930s/WW2 military production British steel helmet with its distinctive canvas covered sprung chinstrap.