The Dragonet Prophecy (Wings of Fire 1) - T. Tui Sutherland

Not every dragonet wants a destiny...Clay has grown up under the mountain, chosen along with four other dragonets to fulfil a mysterious prophecy and end the war between the dragon tribes of Pyrrhia. He's not so sure about the prophecy part, but Clay can't imagine not living with the other dragonets; they're his best friends. So when one of the dragonets is threatened, all five spring into action. Together, they will choose freedom over fate, leave the mountain, and fulfil their destiny - on their own terms.