The source of Dragons

[Hookbill the Goomba]

As Falagar and NightKnight have suggested, the Dragons being Hermaphrodites would perhaps be the best idea. If Morgoth wanted a large army of Dragons, he didn’t want the Dragons to have to go through the whole candle light supper and meeting the parents business that male and female Dragons would have to do. So In the interest of Time saving, Melkor would have made them as Hermaphrodites, that is plane enough. We also assume that, as with anything, Melkor made the Dragons in Mockery of another creature, this we take to be Eagles. However, as the encyclopaedia of Arda says:

Of the origins of dragons, no tale tells; the first of them to be seen was Glaurung, Father of Dragons, who first issued from Angband in the middle of the First Age. After Glaurung came many others to strike fear into Elves and Men for the next three ages; among them were Ancalagon the first winged dragon, Scatha who dwelt in the cold northern wastes, and Smaug, last of the great dragons.

As dragons live, in the words of Thorin, "Practically for ever” and most of that time is spent on a pile of Gold or in battle, Dragons don’t seem to want to mate, so we can assume that they don’t. However, we can also assume that Dragons can only have a limited number of Eggs, seeing as, alike to hobbits, they are never seen nowadays, as they hide away in old dwarf mines on piles of riches, I assume. But;

The dragons were not destroyed at the end of the Third Age; some are said to have survived to our own time, but the great worms and drakes of the Elder Days are no more.