Incest and affairs of Japan's scandalous penguins

Feuds, love -- and even incest! Charts detailing the relationships among penguins at two of Japan's aquariums offer more drama and scandal than any TV soap opera.

Incest and affairs of Japan's scandalous penguins
Feuds, love -- and even incest! Charts detailing the relationships among penguins at two of Japan's aquariums offer more drama and scandal than any TV soap opera.