Character mistake: When Bugs is reading the book, he says "Octopuses", but when we see a close-up of the book, it reads "Octopus."
Bedevilled Rabbit (1957)
1 character mistake - chronological order
Continuity mistake: When Bugs discovers he is in Tasmania, he is holding a carrot in his hand. But when he sees the other animals running like mad, the carrot has gone.