Character mistake: When Tom opens the "Life with Tom" book to Page VII, we see the page and there is a typing error in the very first line. The word wasn't is misspelled as "was'nt."
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.
