Python

This is one of the largest snakes in the world: it lurks in the shadows, calculating its moves before launching on prey. As a key regulator of the ecosystem, the giant python teaches us that even scary-looking beings can be a force for good.
Written by the harrypotter.com team
“The Patronus is a kind of positive force, a projection of the very things that the Dementor feeds upon - hope, happiness, the desire to survive – but it cannot feel despair, as real humans can, so the Dementors can’t hurt it.”
JK Rowling signature