The average lifespan of a domestic cat is 12-14 years, but some cats can live much longer with proper care. To help your cat live a long and healthy life, it is important to provide them with a balanced diet, regular veterinary check-ups, and plenty of exercise. Additionally, it is important to keep your cat indoors and provide them with a safe and stimulating environment. Finally, providing your cat with plenty of love and affection can also help them live a long and happy life.