This extensively revised and updated third edition of an indispensable resource brings together - in one place - vital information about fluid, electrolyte, and acid-base physiology and fluid therapy for dogs and cats. The in-depth and clinically relevant approach of the previous editions has been retained. Valuable insights to interpretation of laboratory results and therapy recommendations appear throughout the text. Three new chapters dealing with strong ion difference approach to acid base balance, the clinical approach to the dehydrated patient, and enteral nutrition are included as well as expanded discussions of disorders of calcium, fluid therapy for gastrointestinal and pancreatic disease, and hemodialysis. Extensive references are included at the end of each chapter to provide the reader with important alternate reading for further research.