Animal science is simply the collective study of domestic animals. This includes every aspect from conception to death, behaviors to management, physiology to nutrition and reproduction to product distribution. Several terminologies in animal science and other related information are the most important tools in the studies. Volume 3 consists of the following chapters: Cytology, Immunology, Metabolic regulation and cell function, Animal Biotechnology, Microbiology, Neurobiology, Animal Physiology, Environmental biology and Zoonotic Diseases.