1- Replacement therapy: Therapy in which we infuse same type of fluid which is lost from body.
2- Adjunctive Therapy: One type of fluid is given to remove other type of fluid e.g., mannitol 25% is given in case of ascites and edema.
3- Supportive Therapy: Fluid is given to animal just to support him to cure quickly i.e., amino acids, minerals, multivitamins and carbohydrates etc.