Paws&Time

Devon Rex age in human years

Devon Rex portrait

Cats keep their own clock. The first year counts for 15 human years and the second adds 9, so a two-year-old devon rex is already 24. Every year after that adds 4, the slowest rate of any pet on this site. A five-year-old devon rex is around 36, and cats are generally considered seniors from about 11. Most live somewhere in the 12 to 18 range, and a 15-year-old at 76 is impressive but not unusual.

The Devon Rex age chart

Human-year equivalents, rounded to whole years. Generated from the same maths as the calculator.
Real ageHuman years
1 year15
2 years24
3 years28
4 years32
5 years36
6 years40
7 years44
8 years48
9 years52
10 years56
11 years60
12 years64
13 years68
14 years72
15 years76

Questions people ask about devon rex years

How old is a 10-year-old devon rex in human years?

About 56. The seven-year rule would say 70; the rates behind this chart say 56, because a cat adds only 4 human years per calendar year after age two.

When is a devon rex considered a senior?

Most vets start treating cats as seniors from about 11. That is when twice-yearly checkups start making sense instead of annual ones.

How do you calculate devon rex years?

Year one is 15 human years. Year two adds 9, making 24. Every year after adds 4. The chart and the homepage calculator use the same maths.

Calculate your Devon Rex's exact ageBirthday in, human years out, plus a free milestone calendar

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