Como Falar Dragonês by Cressida Cowell

In this adventurous tale, young Viking Hiccup Horrendous Haddock III and his loyal dragon, Toothless, find themselves embroiled in a series of misadventures as they attempt to complete a simple task for their pirate training program. However, things take a turn when they are captured by Roman soldiers, leading to a daring escape plan that involves cunning, bravery, and a bit of dragon magic. Along the way, Hiccup learns valuable lessons about leadership, friendship, and the importance of understanding different cultures, all while navigating the challenges of growing up in a world filled with dragons and danger.