Dragons are magical creatures, found all over the world.
 First book
 Fourth book
The first task of the Triwizard Tournament is to get past a dragon, and four different female specimen are shipped to Hogwarts on that occasion, one for each Champion. Cedric's dragon is a Swedish Short-Snout, Fleur's is a Common Welsh Green, Krum's is a Chinese Fireball, and Harry's is a Hungarian Horntail.