When we think of penguins, we usually imagine a clumsy, flightless bird braving the Antarctic chill in a permanent state of formal dress. They are the darlings of the animal kingdom, often relegated to “cute” status in our collective imagination. But if you strip away the Hollywood charm, you’re left with a creature that is – frankly – one of the most bizarre and resilient biological machines on the planet.

From prehistoric giants that could look a human in the eye to a social life governed by “stone currency,” penguins are far more than just a waddle. Here are six facts that show the gritty, fascinating reality of life in the tuxedo.

Images: Canva (for representative purposes only)