A cat's lifespan is influenced by a variety of factors, such as genetics, diet, living environment, and healthcare. Therefore, the lifespan of different cats may vary.
Generally, domesticated cats, under good care and medical conditions, have an average lifespan of about 10 to 15 years. However, many cats can live much longer, with some even living to be over 20 years old.

However, it should be noted that stray cats usually have a much shorter lifespan than domestic cats, with an average lifespan of around 6 to 10 years. This is mainly because stray cats live in harsh environments, have unstable food sources, and are prone to illness or accidents.