Jonathan's Dastardly Dinosaurs is a Spot the differences book. This book is fifty-seven pages long and includes twenty-seven pairs of similar cartoon drawings. Each pair shows dinosaurs engaged in various activities such as dining, playing football and dancing. In addition, all cartoons are accompanied by humorous captions featuring word play such as puns and alliteration. Separate pages with solutions are included after each pair. These pages show additional drawings with the differences circled. Spot the difference books are popular among children, especially those between the ages of seven and eleven. This particular book may appeal to boys and girls in this age range. The topic of dinosaurs seems to appeal to boys, especially.