Toxicology has gained considerable significance in recent years due to the extensive and untargeted use of agricultural chemicals and drugs, as well as the detrimental impact of environmental pollution on the health of animals. In developing countries, domestic animals are particularly vulnerable to the effects of natural toxicants, such as Phytotoxins and Mycotoxins, due to their indiscriminate feeding habits. Toxicology has been recognized as a distinct field of study in all scientific disciplines, both at the undergraduate and postgraduate levels, for the past four decades, with a strong emphasis on its teaching, research, and practical applications in clinical settings. This book has been written with two primary objectives: to serve as a supplemental textbook for students and to provide a valuable resource for practitioners. It has been comprehensively prepared, with up-to-date references offering clinically oriented guidance on a wide range of potentially toxic substances. Furthermore, the book covers both traditional and non-traditional areas of toxicology and provides quick reference charts and tables, giving readers vital information at their fingertips.