From the Super Mario Wiki
Retrieved from "https://www.mariowiki.com/index.php?title=Zoo_Zounds&oldid=2524729"
After two beats of music, three animal sound effects are played: one of which is always a crow, while the others can be a cat, a wolf and/or a pig, but one of these will be left out each time. The player is then asked "Who didn't you hear?", the possible answers being "Cat", "Pig", and "Wolf". If the player taps the correct one, they will win, while if they tap either of the incorrect answers, they will lose.