Here are some factors that can influence an indoor cat's lifespan:
* Breed: Certain breeds are known to have longer lifespans than others.
* Diet: A healthy diet is crucial for a cat's longevity.
* Healthcare: Regular vet checkups, vaccinations, and preventative care can help prevent illness and extend lifespan.
* Environment: A safe and stimulating environment can contribute to a cat's well-being and longevity.
* Genetics: Some cats are simply predisposed to longer lifespans.
While 13-17 years is the average, some indoor cats can live well into their 20s! It's important to note that these are just estimates, and every cat is an individual.