This book, like an X-ray, will show you the structure of man and animals invisible to the eye. The unique photographs show all the bones of our bodies, the skeletons of birds and fish, insects and amphibians, reptiles and mammals. Consider them in detail! You will see: each of the 206 human bones, dwarfs and giants among people and animals, the largest flying reptile in the history of the Earth. You learn: what a "bloody finger" is; why horses tiptoe; who change skeletons like outfits; how many breaths we take in a year. You will understand: why does the horse "look in the teeth," is it possible to tie the bone in a knot, why a person walks straight, how the bone repairs itself, and much, much more.