Cultures around the world have created unique mythologies surrounding frogs. In ancient Egypt, Heqet and the Ogdoads were god frogs associated with fertility. For the Penobscot, a giant frog used to hoard all the water in the world, until a hero killed it and released the rivers. In ancient mongolian myths, Buddha was only able to create all elements with the help of a frog. Why do such different cultures have similar frog mythologies, always related to water, fertility or transformation? What does this tell us about humanities’ deepest worries and hopes?