Originally posted by NemeBro
Smaug was killed by a single magic arrow to the chest by a man whose backstory was introduced in the same paragraph he killed Smaug in.
So I mean, theoretically, despite Smaug's enormous power, any good archer (The elves have a lot of those from what I hear) with a fruity magic arrow can make Smaug go out like a pussy.
It seems you misunderstood the point of the book.
Smaug's scales were impervious to nearly all weapons, but his underbelly was soft, so to compensate for it, Smaug slept upon the treasures of Erebor, which allowed bits off gold and jewels to embed themselves in his underbelly, this diamond wastcoat was intended to cover his only weak spot, however Bilbo discovered a bare patch on the left side of Smaug's underbelly. Bard was told about that spot by the thrush, which was the only reason that his arrow took Smaug down, besides you know, being a magic arrow.
'Old fool! Why there is a large patch in the hallow of his left breast as bare as a snail out of its shell!'
From the Hobbit Page 274.
Chapter 12 Inside Information.
"Wait! Wait!" it (The Thrush) said to him. "The moon is rising. Look for the hallow of the left breast as he flies and turns above you!" And while Bard paused in wonder it told him of the tidings up in the Mountain and of all that it had heard.
Then Bard drew his bow-string to his ear. The dragon was circling back, flying low, and as he came the moon rose above the eastern shore and silvered his great wings. The Hobbit Page 300. Chapter 14 Fire and Water
"Arrow!" said the bowman. "Black arrow! I have saved you to the last. You have never failed me and always I have recovered you. I had you from my father and he from old. If ever you came from the forges of the true King under the Mountain, go now and speed well!"
The great bow twanged. The black arrow sped straight from the string, straight for the hollow by the left breast where the foreleg was flung wide. In it smote and vanished, barb, shaft and feather, so fierce was its flight. With a shriek that deafened men, felled trees and split stone, Smaug shot spouting into the air, turned over and crashed down from on high in ruin. The Hobbit Page 301.
Chapter 14 Fire and Water
The Lake roared in. A vast stream leapt up, white in the sudden dark under the moon. There was a hiss, a gushing whirl, and then silence. And that was the end of Smaug. The Hobbit Page 301.
Chapter 14 Fire and Water