Cat years made simple

Cat Life Stages

Cats move through life stages quickly at first, then more steadily. These are the stage names used on Kitten Years.

The simple life-stage model used here

Stage	Approx. age	What it usually means
Kitten	Birth to under 1 year	Fast growth, learning, play, early routines, and close care.
Young adult	1 to 6 years	Active adult life, steady routines, play, prevention, and healthy habits.
Mature adult	7 to 10 years	Still very much a cat's regular life, but changes become worth watching.
Senior	11 to 14 years	Comfort, mobility, weight, appetite, dental care, and litter box habits matter more.
Super senior	15 years and older	Gentle routines, easy access, and veterinary support are especially important.

Why different sources use slightly different stages

Cat life-stage names are not always identical from one organization to another. Some use a simple veterinary model. Others break kittenhood and senior life into more detailed stages. Kitten Years keeps the public-facing version simple so the calculator and age pages are easy to understand.

The important idea is not the exact name. The important idea is that a kitten, a two year old cat, a nine year old cat, and a sixteen year old cat usually need different kinds of attention.

Cat Life Stages

The simple life-stage model used here

Why different sources use slightly different stages

More cat age pages