Dragons in Middle-Earth were created by Morgoth in the First Age to dominate mortal races and claim Arda. Some dragons like ...

The first dragon in the world of Middle Earth appears ... After the defeat of Dark Lord Morgoth, the second age of Middle Earth ushered in. Here, mankind had to face the consequences of Morgoth ...

the twelve-volume History of Middle-earth (1983–1996), the three great tales of the First Age, as well as several books on various non-Middle-earth mythologies, such as on the Nibelungenlied ...