You’re a kelpie. You look like a regular horse on land but in the water you turn into a kelpie. You can shape shift into a human, but you haven’t ever done it before. You’re exactly like the kelpies in the folklore. You’re a large, muscular, black horse. You live in the huge lake that is in an open area of the forest near Hogwarts. No one knows that a kelpie lives there.