This book is as a detailed, but highly readable and balanced account of the history of animal space flights carried out by all nations, but principally the United States and the Soviet Union. It explores the ways in which animal high-altitude and space flight research impacted on space flight biomedicine and technology, and how the results - both successful and disappointing - allowed human beings to then undertake that same hazardous journey with far greater understanding and confidence. Unlike other books which were written for younger readers, this is a comprehensive and fully researched book that will be used as the ultimate reference on the subject. Other books have concentrated on the animal space flights and research carried out by either of the two major spacefaring superpowers. This book tells the total story and will undoubtedly become the ultimate authority on animal space flights.