Toxicology researches the effect of chemicals on living beings. Treatment and assessment are fundamental aspects of toxicology. It has many branches ranging from forensic and legal toxicology to ecotoxicology. This book is a valuable compilation of topics, ranging from the basic to the most complex advancements in this field. It presents the complex subject of toxicology in a comprehensive manner. With state-of-the-art inputs by acclaimed experts of this field, this book targets students and professionals. Through this book, we attempt to further enlighten the readers about the new concepts in this field.