Did dragons in Tolkiens Middle Earth breed and produce young or

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In LOTR universe books or films, are all dragons considered evil? If a dragon had been raised by humans from egg to adult, would it be semi loyal to humans? - Quora

Glaurung: the first dragon of Middle-earth – mogsymakes

What are Tolkien's dragons like, and why are dwarves susceptible to dragons' spells? - Quora

Dragons, Tolkien's Middle-earth legendarium Wiki

How were dragons created by Morgoth according to Tolkien? - Quora

Why was Smaug so much stronger than other dragons in Middle Earth? Is he a 'fire' dragon? - Quora