Developing technology has expanded the possibilities of diagnosing diseases and treatment management in the field of veterinary medicine in today's conditions. With the significant progress made in the field of preventive medicine, the survival time of the patients has increased and the expectations regarding the level of patient care have increased. In this direction, it has gained importance to eliminate deficiencies in veterinary emergency and critical care and to optimize patient care quality and standards. It is important for the prognosis that the regular control and follow-up of the patients in need of intensive care is carried out in accordance with the protocol within the framework of certain rules. Kirby's 20 rules are a set of rules created in 2017 by Rebecca Kirby (DVM, DACVIM, DACVECC) for the care of critically ill patients.This list of rules, which we think will improve animal welfare if implemented, will serve as a reminder to the clinical team of the 20 items that should be checked at least once a day in critically ill patients. Thus, it will allow to evaluate the general clinical condition of the patient, to increase the quality of patient care, to set standards for patient care, and to reduce morbidity and mortality.Our aim is to convey this protocol, which was created on veterinary critical care and emergency, to veterinarians and technicians in an explanatory manner.