Horses continuously provide a certain lure to certain readers.  Wild horses have a special allure all their own.  The beautiful color photos that illustrate this book will hook the readers, and the text will inform them and make them think.  As it traces the story (across several decades) of the research that has gone into developing a medicine to control the population growth of wild horses with minimal intrusion, and why such measures are necessary, it also teaches about the history of wild horses, their genetics, and their lifestyle (although somehow that doesn’t seem like the appropriate word to apply to a community of animals, but I like how all-encompasing it is).  It is well-written and packed with science in a real-world context.