If you watch Bizarre Foods or No Reservations, some of this food may not be very new to you. Extreme Cuisine is basically an overview of all sorts of things people eat around the world. The book is divided into different sections - Mammals; Reptiles & Water Creatures; Birds; Insects, Spiders, and Scorpions; Plants; and Leftovers (which includes Blood, Fermented Food, Roadkill, and Excrement). There are also recipes within, if you are inclined to make earthworm patties, camel hoof paste, curried rat with noodles, placenta pate, or dandelion wine.
Educational but mostly entertaining.