How to speak dragonese, by Cressida Cowell
This is the first book of the how to train your dragon. It starts with Hiccup at the pirate training program on his boat. Then he gets stuck in a roman ship and they take Toothless. So Hiccup and his friend Fishlegs have to go back to the Hooligans village without his pet Toothless. When they get back to the village they get kidnapped by Romans. Then they have to go to the arena and battle sharkworms. His dad sent out a war party and they spotted them on a airballoon and they went back to the village nice and peacefully.
Reviewed by Ben from Cummings Park, 8 years old