So many Looney Tunes and Merrie Melodies cartoons feature dynamic duos - but can you tell who costarred with who? To ace this quiz, take a look at the pairs of Looney Tunes characters below and determine if they appeared together or never crossed paths in the original Golden Age Looney Tunes and Merrie Melodies cartoons (from 1929 - 1964). If it's a bit of an unusual pairing, we will tell you which cartoon the characters costarred in.