When Is My Cat a Senior?
Unlike dogs, cats do not have a size-based aging curve — a Maine Coon and a Siamese age on roughly the same timeline. But cats do have distinct life stages, and understanding which one your cat is in tells you a lot about what care they need right now.
Current AAHA/AAFP feline life stages
Current AAHA/AAFP guidance classifies cats as kitten from birth to 1 year, young adult from 1–6, mature adult from 7–10, and senior after age 10. End-of-life care can become relevant at any age and is considered separately.
| Cat age | Current life stage | Approx. human equivalent |
|---|---|---|
| 0–12 months | Kitten | 0–15 years |
| 1–6 years | Young adult | 15–40 years |
| 7–10 years | Mature adult | 44–56 years |
| Over 10 years | Senior | 60+ years |
Not sure which stage your cat is in? Our cat age calculator converts their age to human years and identifies their current life stage.
What changes at each stage
During the mature-adult stage (7–10), changes may be subtle. Tracking weight, body and muscle condition, mobility, teeth and normal behavior gives your veterinarian a useful baseline; visit frequency should reflect the individual cat’s health.
After age 10, a cat is in the current senior stage. Weight or muscle loss, reduced grooming, altered sleep, thirst or mobility changes deserve veterinary assessment rather than being dismissed as aging.
At 15 and beyond, some clinicians still use “geriatric” descriptively, but it is not a separate age stage in the current framework. Care should be individualized around comfort, function, disease and quality of life.
Early signs your cat is entering their senior years
- Sleeping or activity patterns changing from the cat’s normal
- Less interest in play or shorter play sessions
- A dull, unkempt or matted coat
- Unplanned weight or muscle loss
- Increased thirst, urination or appetite changes
- Stiffness, hesitation or changed jumping behavior
Any of these changes warrants a veterinary check. Seek prompt advice if a change is sudden, severe or affects eating, drinking, breathing, urination or mobility.
What to discuss with your vet
For a mature-adult or senior cat, your veterinarian may discuss a physical and dental exam, weight and muscle trends, blood pressure, and blood or urine tests based on history and risk. The right schedule and tests vary by cat.
For a broader view from kitten to senior, see the cat life stages guide.
Sources and evidence
These references support the health and life-stage claims on this page. Guidelines inform care planning; studies explain specific methods; neither replaces advice from your veterinarian.
- Veterinary guideline20212021 AAHA/AAFP Feline Life Stage Guidelines
AAHA and the Feline Veterinary Medical Association
- Veterinary guideline20232023 AAHA Senior Care Guidelines for Dogs and Cats
American Animal Hospital Association
General guidance only — not veterinary advice and not for emergencies. Consult your vet for any health decision.
Call your vet now if your pet has trouble breathing, collapses, has severe pain, repeated vomiting, seizures, heavy bleeding, or suddenly cannot stand.
Frequently asked questions
- At what age is a cat considered senior?
- Under current AAHA/AAFP guidance, a cat enters the senior stage after age 10. Care should still be based on individual health, function and veterinary assessment.
- What are the first signs my cat is aging?
- A change from the cat’s normal weight, muscle, grooming, mobility, sleep, thirst, urination, appetite or behavior deserves attention. These signs are not proof of disease, but they should not be dismissed as aging.
- How often should a senior cat see the vet?
- There is no universal schedule. Current guidance supports individualized, often more frequent assessment for senior cats; your veterinarian should set the interval and tests from health history, examination and risk.
- Do indoor cats age the same as outdoor cats?
- The age-stage framework is the same, but lifestyle changes exposure to injury, infection, parasites and other risks. Indoor living does not remove the need for preventive veterinary care or enrichment.