Mickey

Mickey was a rat. In 2267, Hikaru Sulu kept him with the intention of adding him to a zoo. When the USS Enterprise (NCC-1701) crew became quite bored, Leonard McCoy taught Mickey to dance. When the crew saw this, he and Spock convinced the crew that this was a sign of Bubonic Plague. The mission to execute Mickey soon became known as Operation Mickey. Nyota Uhura penned the song The Saga of Mickey the Space Rat to commemorate this rodent.