Incest and affairs of Japan's scandalous penguins cnn.com

Despite some of the unquestionably dark penguin personality traits on display, the latest relationship charts claim to be "cuter, with more happiness."
Related content 16 Japan experiences every traveler needs to enjoyHow to understand the penguin relationship mapsThe charts are packed with observations from the penguins' caretakers.
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Rose (in the left blue bubble) and Warabi (in the pink bubble on the right) are a star couple at the Sumida Aquarium.
The two Penguin Relationship Charts also reveal how the aquariums' caretakers are unwittingly pulled into the penguins' affairs of the heart.