One day, a gluttonous dragon decides to go on a diet, eating nothing but an olive. But once he has swallowed his tiny meal, the dragon begins to feel terribly ill, so he calls on Doctor Zipper...This story by Carles Cano, coupled with the vivid, light-hearted illustrations of Francisco Bravo, shows young readers the hilarious consequences of going on an olive-a-day diet. But, beware, this diet is only suitable for dragons... and lions... and eagles...