Continuity mistake: When the squirrel attempts to cut the coconut with the saw, the saw's teeth break off and fall around the coconut. But when the squirrel returns with an axe, the pieces of teeth have changed position.
Continuity mistake: When Fred (Ralph Wolf in disguise) says "Hello" to Sam at the end of the short, you can see that there is a card in both the top and bottom holes in the "In" section of the punch clock. But when Sam begins spanking Ralph, the bottom card of the "In" section has moved to the bottom hole of the "Out" section.
Continuity mistake: When we see the park where the wild cat is hiding, there is a sign saying "No Le Pate de Fois Grass", but when we see the sign in the next shot, the "Le" has disappeared.
Character mistake: On the sign outside Dr I.Q. Hi's headquarters, the word "Stratosphere" is spelled "Stratopere."
Continuity mistake: When Sam is on the ground after being crushed by the piano coming down the stairs, Sam's eyes are open but in the next shot they are closed.
Continuity mistake: When the lady is putting her clothes on the clothes line, she is about to put up a sheet and you can see there are three items of clothing next to it. But when she is putting up the sheet in the next shot, there is now only one item of clothing.
Continuity mistake: When Tom removes the packaging, you can see that it reads "Life with Tom by Jerry Mouse" on the front cover, but when we see Tom reading the book later on in the cartoon, the wording has disappeared.