How Long Do Cats Live?
Quick Facts
- Common lifespan: about 12–18 years
- Indoor cats may live into their late teens or 20s
- Outdoor cats face higher accident and disease risks
- Weight control supports longevity
- Dental disease and kidney disease are common senior-cat concerns
Indoor vs. outdoor lifespan
The biggest lifespan difference for many cats is environment. Indoor cats are protected from cars, predators, harsh weather, fights, and many infectious exposures. Outdoor cats may enjoy more stimulation, but the risk profile is much higher.
Health factors that matter
A cat’s weight, dental health, kidney function, thyroid function, and mobility can strongly affect quality and length of life. Routine veterinary checks become more important as a cat enters the senior years.
Breed and genetics
Some breeds are more prone to specific inherited conditions, but mixed-breed cats can also develop chronic health problems. Genetics matter, but daily care and early detection matter too.
Signs your cat is aging
Senior cats may sleep more, jump less, lose weight, drink more water, groom less, vocalize more, or become less tolerant of stress. Subtle changes are worth noticing because cats often hide illness.
How to support a senior cat
Provide clean water, appropriate food, comfortable resting areas, easy litter box access, gentle play, safe indoor enrichment, and veterinary guidance when behavior or appetite changes.
Frequently Asked Questions
Can cats live 20 years?
Yes. Many cats live into their 20s, especially indoor cats with steady care.
Do indoor cats live longer?
Usually yes, because indoor cats avoid many major outdoor hazards.
What is considered old for a cat?
Many cats are considered senior around 10 to 11 years, though many remain active much longer.
Bottom Line
Cats commonly live about 12 to 18 years. Indoor cats often live longer because they face fewer risks from traffic, predators, fights, parasites, poisons, and infectious disease.