Dragons only exist in fairy tales and myths. But long ago people really belived in them and they drew pictures of them. In these pictures dragons look like big serpents with wings,claws and a long tail. Dragons breathe fire and destroy everything in front of them. It is easy to see why the Vikings liked to put the head of a dragon on their boats.
There are stories about heroes who go out to fight dragons. In Greek myth Hercules killed a dragon with nine heads. Beowulf,the hero of an old English poem,also fought a dragon. There are dragons even in Christian horse as he kills a dragon. People also listened to stories about dragons in Serbian epic poetry.