Continuity mistake: When Sam is chasing Bugs, Bugs runs back into the warden's office and Sam is holding a bat in his left hand. When Sam approaches the warden's desk in the next shot, the bat is now in his right hand.
Continuity mistake: When Yosemite Sam is electrocuted by the electric chair, his moustache is burnt off. When Sam chases Bugs out of the warden's office, the moustache is fully grown again.
Continuity mistake: When Yosemite Sam is standing on the platform of the gallows, he is holding a baton in his right hand. When Sam pushes the button and gets hung in the noose, the baton disappears.
Continuity mistake: When Sam is electrocuted on the electric chair, the straps on the arm are hanging loose, but in the next shot they are now standing up.
Continuity mistake: When Sam enters the warden's office, the wall next to Bugs has nothing on it, but when Bugs says "Have a light!", a switch to the electric chair that Sam is sitting on has appeared.
Continuity mistake: When Bugs hands Sam a fake loaf containing an escape kit, the wall next to the door in Sam's cell is completely clear, but when Sam empties the contents onto the floor, a metal sheet has appeared.
Continuity mistake: When Bugs gives Sam a fake loaf containing the escape equipment, the loaf has nothing on the side, but when we see a close up of the loaf in the next shot, an "Ajax Escape Kit" label has appeared.
Continuity mistake: When Yosemite Sam fires Bugs from the cannon, Bugs has "3 1/2" on his prison outfit, but when Sam orders Bugs into the prison cell after recapturing him, the "3 1/2" has disappeared.