Skip to content

Deciphering Cat Ages & Levels


Of all of the myths involving companion animals, one which continues to persist (and nonetheless drives me batty) is the notion that cats (and canines) get older at a tempo of seven years for each human 12 months.

Frankly, this concept has by no means made a lot sense to me. We’ve all seen (or a minimum of know of) cats who’ve lived to the age of 20. In reality, at one level I had over 30 20-year-old cats in my veterinary observe. Utilizing the 1-equals-7 rule, a 20-year-old cat can be the equal of a 140-year-old individual, which merely isn’t doable. Let’s now contemplate copy. Cats and canines can get pregnant and produce offspring as early as 6 months of age. Utilizing the 1-equals-7 rule, a 6-month-old cat is equal to a 3½-year-old human. Can folks have infants at this age? In fact not! The 1-equals-7 rule doesn’t work for the easy cause that cats age quicker once they’re youthful and decelerate once they’re older.

How one can evaluate cat years to human years

A variety of years in the past, the American Affiliation of Feline Practitioners (AAFP) and the American Animal Hospital Affiliation (AAHA) collaborated to create an age-comparison chart that takes this into consideration. (See sidebar.) In keeping with this chart, a 1-year-old cat is equal to a 15-year-old individual, and a 2-year-old cat is sort of a 24-year-old individual. After that, you add 4 human years for each cat 12 months. It is a extra logical method and, in my expertise, it appears fairly correct. Be aware: This chart doesn’t apply to canines. Canines have totally different age equivalents relying on their dimension (large canines have shorter life spans than small canines, for instance). Cats are all roughly the identical dimension, so the chart is common for cats.

What number of life levels do cats have?

One other matter associated to age and longevity is cat life levels. There are a number of opinions on this topic however no consensus. The variations are largely based mostly on semantics, and whether or not you are usually a “lumper” or a “splitter.” Lumpers desire to group some levels collectively into a bigger class, whereas splitters desire to subdivide the levels. The one frequent floor amongst all of the variations is the primary life stage: kitten.

©Daniel L Gonzalez | Getty Photos

The up to date age-comparison chart talked about above additionally describes the life levels of a cat, dividing it into six distinct levels:

Kitten: 0 to six months

Junior: 7 months to 2 years

Prime: 3 to six years

Mature: 7 to 10 years

Senior: 11 to 14 years

Geriatric: 15 years and older

Splitters had been in all probability proud of this six-stage model, though as a cat veterinarian, I had combined emotions. I by no means knew precisely the place to attract the road between “grownup” and “senior.” Dividing older cats into “mature,” “senior” and “geriatric” classes based mostly on these age ranges appeared smart. Nonetheless, dividing youthful grownup cats into “junior” and “prime” felt a bit contrived.

In a just lately up to date (2021) report, the AAFP/AAHA described 4 fundamental age-related feline life levels:

Kitten:  beginning to 1 12 months

Younger grownup: 1 to six years

Mature grownup: 7 to 10 years

Senior: Older than 10 years

When you’re a lumper, you in all probability love this streamlined model. I’m content material with the primary three classes and their related age ranges; nonetheless, I really feel that the senior stage needs to be additional divided, leading to a five-stage classification that, in my view, covers all of the bases:

Kitten: beginning to 1 12 months

Younger grownup: 1 to six years

Mature grownup: 7 to 10 years

Senior: 11 to fifteen years

Geriatric: 16 years and older

I’ve seen variations of the variations described above, however with the time period “tremendous senior” changing the time period “geriatric.” I think some folks really feel that the phrase geriatric is simply too medical, or that it carries adverse connotations. As a veterinarian, I desire the time period geriatric, though I perceive why cat dad and mom would fancy the time period tremendous senior, because it invokes awe and marvel and makes the cat sound like a superhero, which is a reasonably cool idea.

Discovering the suitable care on your cat at every stage

©Ben-Schonewille | Getty Photos

The primary cause veterinarians divide a cat’s life into levels is to assist us formulate well being and wellness plans which are applicable for that specific life stage. The diseases and behavioral modifications we’re more likely to encounter, and the diagnostic assessments which are beneficial, will differ relying on these levels. Whether or not you, as a cat guardian, desire the four-stage classification (kitten, younger grownup, mature grownup, senior), a five-stage model (kitten, younger grownup, mature grownup, senior, geriatric) or a six-stage mannequin (kitten, junior, prime, mature, senior, geriatric) is a matter of private desire. As a cat veterinarian who feels that each one cats die too younger, the truth that so many life stage charts acknowledge the existence of a geriatric or tremendous senior stage tells us that cats live longer than ever earlier than, and that’s one thing we will all agree is fantastic information.

Cat to human age chart

You may view all the 22-page AAHA/AAFP Feline Life Stage Tips launched in 2021 at:


Leave a Reply

Your email address will not be published. Required fields are marked *