At What Age Is a Cat Considered a Senior?
Feline guidelines generally call cats senior from around age ten, but hidden aging often starts earlier than the label.
Cats are masters at hiding age. Feline practice guidelines commonly describe cats from about seven as mature and from about ten as senior, and many indoor cats live well into their late teens. Because cats mask illness, the senior label is less about behavior you can see and more about when routine screening should tighten.
What changes before you notice
Kidney function, thyroid activity, blood pressure, and joint comfort all drift with age, usually without drama. A cat that simply sleeps more or jumps less may be adapting to change rather than slowing down by choice — and how early this starts varies widely between individuals.
From roughly age ten, most feline clinicians suggest twice-yearly exams with blood, urine, and blood-pressure checks. Discuss the right cadence for your cat with a veterinarian, since lifestyle and breed shift the schedule.
MediIndex articles are for general information only and are not medical advice, diagnosis, or advertising. Outcomes vary by individual — consult a board-certified specialist for personal decisions.