Glaurung Size Chart by SyndarilArt on DeviantArt

ArtStation - Glaurung the gold-worm

Dragons of Middle Earth - 9GAG

The Nerd of the Rings on X: Smaug and Glaurung were based on real dragons Tolkien encountered when he gained access to a secret civilization of dwarves who domesticated the creatures. Here

Turin Turambar, Glaurung's Bane., an art print by Hunter Garcell - INPRNT

glaurung and nienor by nienor -- Fur Affinity [dot] net

When you find out how big Ancalagon was

Pixel. - 9GAG

Dragons in Middle-earth - Wikipedia

john_howe_middle-earth_nienor and glaurung sketch2.jpg

Glaurung by HochSpannung -- Fur Affinity [dot] net