Newt on Kappas

An extract from the textbook Fantastic Beasts and Where to Find Them

The Kappa is a Japanese water demon that inhabits shallow ponds and rivers. Often said to look like a monkey with fish scales instead of fur, it has a hollow in the top of its head in which it carries water.

The Kappa feeds on human blood but may be persuaded not to harm a person if it is thrown a cucumber with that person’s name carved into it. In confrontation, a wizard should trick the Kappa into bowing – if it does so, the water in the hollow of its head will run out, depriving it of all its strength.

Fantastic Beasts and Where to Find Them

By J.K. Rowling