Leopard
In Africa, there is a story about a boy that turns into a leopard. He tells people that... well, just read the story:
In a small African village, there lived a young boy by the name of Akosho. He seemed to be a normal child, always playing with the other boys, helping his parents, things like that. But Akosho always went out to the woods in the middle of the night. Each night, a blood curdling scream would fill the air, and then Akosho would return home. One day, while he was working with his parents, he explained everything to them. He told them that he was a leopard. Every night he would turn into a leopard and roam around. The only way he could turn back into a boy again was to kill a man. His parents laughed. They did not think anything of it. Then the boy led them to the cave in the woods where the dead victims lay. Akosho's parents were terrified. Soon after, the village chief found out. He immediately had the boy burned to death.