What’s the name of the dragon in The Hobbit?

The answer is: Smaug. We all know dragons are greedy, but Smaug is especially so. Which makes the thievery of his treasure by a hobbit, 13 dwarves, and one wizard all that more impressive. But it was really Bilbo Baggins who was key in finally killing Smaug and ending his 150-year reign of greed. A lesson to dragons to never overlook a hobbit.Source