Dolphins have long played a role in human culture. Dolphins are common in Greek mythology, and many coins from ancient Greece have been found which feature a man, a boy or a deity riding on the back of a dolphin. Four countries – Chile, Costa Rica, Hungary, and India – have declared dolphins to be “non-human persons” and have banned the capture and import of live dolphins for entertainment. Of the five freshwater species of dolphins in the world, the pink Amazon River dolphin, Inia geoffrensis, or “bufeo colorado” as they are known in Peru and “botos” as they known in in Brazil, are considered to be the most intelligent. Dolphins appear to have a darker side, according to scientists who suggest they can resort to rape to assert authority. So here is the revenge, spreading on street walls.