The present textbook has been designed to serve as a valuable resource for elementary animal physiology courses offered at colleges of agriculture, zoology, veterinary and animal sciences. It is the aim of this textbook to provide a clear and concise explanation of the functioning of the various systems of domestic animals in all its chapters. Whenever deemed appropriate, the textbook has made use of examples from both human and non-domestic animals such as rats and rabbits. As a discipline, physiology has grown to encompass a wide range of topics.

The textbook delves deeply into the following areas:

The nature and scope of physiology
The composition and regulation of body fluids, including water, electrolytes, and acid-base balance
Respiration
Blood and the circulatory system
The structure and function of the kidney
The function of the rumen
Digestion and metabolism
Vitamins and minerals
The endocrine system and its secretions
Reproduction in males
Female reproduction
Lactation
The nervous system
The physiology of bone, skin, and special senses
The regulation of body temperature.