Ever wonder where Nintendo got the penguin sounds from for Mario 64? Well, they’re definitely more accurate than you think, and this video proves it. In the game, they sometimes act as obstacles to Mario’s quest and benevolent penguins often speak with him, asking for help or offering him a service. Continue reading for the video.

In Mario 64 a Penguin loses her baby, Tuxie, and asks the plumber to find her. Mario finds her and is awarded with a Power Star. Later on in the game, Mario has to race down a long, icy slide and get to the finish line before a Penguin does. If Mario wins, he’s gifted another Power Star.