A painting of the death of Glaurung, the first dragon of Morgoth

Glaurung, The One Wiki to Rule Them All

Glaurung, Ancalagon, & the Dragons of The Silmarillion

Dragons, The One Wiki to Rule Them All

The Inklings: Glaurung -- The Father of Dragons

Glaurung, The One Wiki to Rule Them All

Glaurung by TurnerMohan on DeviantArt

Who was the greatest dragon in Lord of the Rings? - Quora

Ancalagon the Black, greatest of the winged dragons, and Morgoth his master - by Çağlayan (skyrace) : r/lotr

Korabas (Malazan) vs LOTR characters.