The field of veterinary science covers vast amount of information that has been gleaned from fundamental and practical research on the biological functions and diseases that affect all animals. The practice of veterinary medicine is characterized by the provision of a wide variety of distinct animal health services to society. Veterinarians diagnose, manage, and treat diseases in animals. The purpose of this book is to present a picture of information access and delivery to the veterinary community and others with interests in the profession. This book describes the various chapters that are key to the diagnosis of any disease. Each chapter deals with the clear knowledge and discussion that will act as a guide for disease diagnosis. Each chapter of the book is written with dedication and help of various standard books that acted as basis to write precisely and clearly. Our goal with this volume is to be concise, but thorough about all of these topics