How to Train Your Dragon — Cressida Cowell

GRONCKLE--
COLOR: A disgusting combination of green, beige, and brown
NASTY BITS: Razor-sharp teeth and spikes
THREAT TO VIKINGS: Minimal, if you have two legs
Brutish, stupid, and altogether quite ugly, this fellow is slow and often too fat to fly. This is good news for the average Viking; make a hasty retreat before he takes a bite from your hide with his pointy teeth.

Hiccup Horrendous Haddock III is a truly extraordinary Viking hero known throughout Vikingdom as "the Dragon Whisperer” ... but it wasn't always so. Travel back to the days when the mighty warrior was just a boy, the quiet and thoughtful son of the Chief of the Hairy Hooligans. Can Hiccup capture a dragon and train it without being torn limb from limb? Join the adventure as the small boy finds a better way to train his dragon and becomes a hero!