Penguins, the way they waddle around and protect their eggs, are often thought of as cute, cuddly and romantic. But those who observe them for extended periods know they have a dark side. Two aquariums in Japan, Kyoto Aquarium and Sumida Aquarium, keep obsessive tabs on their penguins and maintain an updated flowchart that visualizes all their penguin drama. As Kyoto-based researcher Oliver Jia points out, penguin drama can include serious crushes and heartbreaks but also adultery and egg-stealing.

And these Japanese aquariums have it all charted in a flowchart that can be studied for hours. The aquariums keep high-resolution versions of each. Spoon & Tamago has all the info you need to get in on the penguin drama.