The exciting Amazing X-rays series is like nothing else on the market. The innovative packaging features a working button on the cover that showcases the book's exclusive built-in light box technology. Each book in the series also includes an assortment of 16 acetate X-rays packed in a lab envelope. To see the kinds of details doctors and veterinarians see, kids simply clip on an X-ray and press a button to light up the images. Before their eyes, hidden bone structures and body mechanics are revealed! Friendly, informative text explains each X-ray, while colorful images, photographs, and illustrations throughout the 40-page book support further study.See beneath the skin, shells, and fur of elephants, cheetahs, tortoises, monkeys, and other residents of the animal kingdom!