Gringott's Dragon

"Nevertheless, as they climbed higher and higher, London unfurling below them like a gray-and-green map, Harry's overwhelming feeling was of gratitude for an escape that had seemed impossible. Crouching low over the beast's neck, he clung tight to the metallic scales, and the cool breeze was soothing on his burned and blistered skin, the dragon's wings beating the air like the sails of a windmill."

- Harry Potter, Ron Weasley, and Hermione Granger escape on the dragon.

This dragon of an unknown breed guarded the Lestrange Vault and the older wizarding family's vaults of Gringotts Wizarding Bank during the 1998 Break-In of Gringotts Wizarding Bank. Whenever it hears the clanking sound of a mine cart approaching it slinks back to allow access to the vault, in fear of being painfully punished.

After the goblin Griphook abandoned them, Harry Potter, Ron Weasley, and Hermione Granger jumped onto the back of this dragon and escaped. They finally jumped off by an unidentified lake, and the dragon flew off. It is unknown if Gringotts ever got this dragon back or not.

Behind the scenes

 * This dragon could either be an Antipodean Opaleye or a Ukrainian Ironbelly. The only piece of information that contributes to the identification of this type of dragon is the detail of "metallic scales", which are characteristic of the Ironbelly. Another clue is that this creature has deep red eyes, a characteristic of the Ironbelly. It may also be a hybrid of the two breeds.
 * In 1991, when Hagrid talked to Harry about Gringotts [The first time] He told him rumors about there being a dragon. Harry, taking intrest, tried to coax Hagrid to tell him more about the dragon. However, he does not seem to take intrest in the rest until it's apperance in 1998.

Appearances

 * Harry Potter and the Deathly Hallows 
 * Harry Potter and the Deathly Hallows: Part 2

Dragon de Gringotts