How many life stages does a cat have?

Current 2021 AAHA/AAFP guidance uses kitten (birth–1 year), young adult (1–6), mature adult (7–10), and senior (over 10), plus end of life at any age.

What life stage is my cat in?

Compare your cat’s age to the ranges below, or use the cat age calculator to convert their age to human years and see the matching stage.

When 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.

Cat Life Stages

Written by FurStage Editorial TeamReviewed by FurStage Evidence ReviewReview date: July 16, 2026

Every cat moves through distinct life stages. Here’s what each means, the ages it covers, and how to care for your cat.

General guidance only — not veterinary advice and not for emergencies. Consult your vet for any health decision. Sources: AAHA canine, AAHA/AAFP feline.

Call your vet now if your pet has trouble breathing, collapses, has severe pain, repeated vomiting, seizures, heavy bleeding, or suddenly cannot stand.

Baby

Kitten

0–1 yrs · ~0–15 human yrs

Explosive growth and learning. Vaccinations, socialization and safe play set the stage for life.

Adult

Young Cat

1–7 yrs · ~15–44 human yrs

Active, playful and physically prime. Maintain enrichment, diet and routine vet care.

Mature

Mature Cat

7–11 yrs · ~44–60 human yrs

Subtle slowing. Monitor weight, teeth and early kidney markers as your cat enters middle age.

Senior

Senior Cat

11–15 yrs · ~60–76 human yrs

Senior wellness years: regular bloodwork, dental care and joint comfort.

Senior

Geriatric Cat

15+ yrs · ~76+ human yrs

Close monitoring years: warmth, easy access and a gentle, predictable routine.

Care checklist

Keep the next steps for cat

Get a lightweight checklist for this cat life-stage path. It is guidance, not veterinary advice.

ToolCalculate your cat’s age OrFind a cat name GuideKitten life stages explained

Frequently asked questions

How many life stages does a cat have?: Current 2021 AAHA/AAFP guidance uses kitten (birth–1 year), young adult (1–6), mature adult (7–10), and senior (over 10), plus end of life at any age.
What life stage is my cat in?: Compare your cat’s age to the ranges below, or use the cat age calculator to convert their age to human years and see the matching stage.
When 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.