There is no precise answer to how long a dog can survive heart failure. It depends on factors such as the dog’s condition, age, physique, and treatment methods.

If a dog suffers from heart failure and does not take medication or other protective measures, the dog's life may be 100 days; if inotropic drugs are used to intervene in the early stage of dog heart disease, the life will only be extended to 600 days; and if other drugs are used to intervene (protection and maintenance) in the early stage, pmbendan will be used in the progression stage when the intervention effect is not obvious. , life may be extended to 900 days. Because premature use of inotropic vasodilators will accelerate heart failure (histology confirms increased valve degeneration), cardiac protection and maintenance can be used for a longer period of time.