Continuity mistake: When Arthur is out hunting in the woods, Arthur is lying on a tree branch. In one shot, his pants leg is coloured brown, whereas, in the next shot, it is skin colour (as if he isn't wearing any pants). In the next shot, the brown pants leg has returned.
Audio problem: When the rooster says "Get out and stay out!" when he kicks the Banty Rooster into the horizon, his beak doesn't move.
Continuity mistake: When Willoughby parks his scooter near the wall of the prison, he steps off the scooter and you can see he has nothing in his hand. When we see Willoughby in the next shot, he is now holding an umbrella.
Revealing mistake: When the lady throws Sylvester through the window, you can see there is a bump on Sylvester's head before he hits the tree.
Continuity mistake: When Yosemite Sam attempts to attack Bugs in the Ben Hare sequence, Bugs says that Sam has flipped his lid and runs off. Sam then runs after Bugs and there is nothing in his hand, but when Sam runs down the stairs to the lions' den, he is now holding a sword.
Continuity mistake: When Bugs and Daffy leave the Emergency Hospital, Bugs has a bandage around his head and on his face, but when he emerges from the lift at the TV studios, the bandages have disappeared.