Smaug, Wiki

Calculating the size of Glaurung : r/tolkienfans

dragons - What does Tolkien say about Ancalagon's physical appearance, especially his size? - Science Fiction & Fantasy Stack Exchange

Ancalagon >>>> Glaurung >>>> Smaug : r/lotrmemes

Who is more powerful, Glaurung or Smaug? - Quora

NO SPOILERS] Westeros's Drogon(short necked, younger and faithful) vs Middle Earth's Smaug(Long necked, badass, intelligent, without a master). Who would win? Personally, I prefer short necked dragons but Smaug might can easily

Smaug vs Balrog: Who Would Win in a Fight in the LOTR Universe? - Genesismyart

Smaug, Dragons

How powerful is Smaug compared to other dragons of Middle Earth? - Quora

Smaug - Tolkien Gateway

King Ghidorah with Smaug (with meme) by Filiko on DeviantArt