The keyboard and the cat.

Someone buys a new computer and the next day wakes up with 3 keyboard keys missing. After some investigations the only suspect with no "alibi" was... the house's cat :) True story till here! The following is an explanation attempt. Nobody can blame the cat though, since the computer was new. It looks like the keyboard manufacturer decided to make its product "taster" by adding some "mouse" flavors to the keyboard mixture :)