Scientists found that deleting a certain gene in mice can make them smarter by unlocking a mysterious region of the brain considered to be relatively inflexible. It is called the ‘Homer Simpson Gene.’
There is an unaired Mythbusters episode in which groups of mice were used to test if “the box is more nutritious than the cereal”. The mice in one of the groups were eating “pallets of cardboard”. One day they checked and there were no longer 3 mice in that group, but 1 really fat mouse.
Walt Disney was afraid of mice.