This book series is based on the book "Biogene Gifte", 3. Edition, published 2010 by Wissenschaftliche Verlagsgesellschaft Stuttgart in German language. Because of the enormous increase in knowledge in the field of natural poisons and venoms the topic is now covered in 5 volumes in English language. The focus of this volume is on the toxic ingredients of animal poisons and venoms, their chemical structures, their effects and modes of actions in target organisms, and on the biology of poisonous or venomous animals. It highlights the symptoms of poisoning or envenoming in humans or animals, cite case reports were available, and gives hints on poisoning prevention and on potential treatments.