The myth of one year of cat (or dog) life is equivalent to seven years of human life has now been debunked because it makes no sense.  There are many cats that live to be 18 or 19, but how often do you encounter 126-year-old or 133-year-old humans?

The fact is, cats age more rapidly in their early years, then slower as they age.  For example, cats can reproduce when they are 6 months old.  If you used the ‘one year equals seven years’ formula, it would suggest that humans could reproduce at the age of 3½.  A more realistic comparison would be that a 6-month-old cat is similar to a 15-year-old-person.

At 1 year of age, cat’s bones stop growing.  This happens in humans around age 24, so to think of, a 1-year-old cat is equivalent to a 24-year-old person. From this point on, no major physiologic milestones occur (such as menopause in women), so it can be hard to say precisely how they age in their later years. Therefore a 20-year-old cat is about as common (or rare) as a 100-year-old person.

If this premise is accepted, than a chart of cat age versus human age would look like the one hereunder. 


Cat Age

           

  6 months

  1 year

  2 years

  3 years

  4 years

  5 years

  6 years

  7 years

  8 years

  9 years

10 years

11 years

12 years

13 years

14 years

15 years

16 years

17 years

18 years

19 years

20 years
 



Human Age

           

  15 years

  24 years

  28 years

  32 years

  36 years

  40 years

  44 years

  48 years

  52 years

  56 years

  60 years

  64 years

  68 years

  72 years

  76 years

  80 years

  84 years

  88 years

  92 years

  96 years

100 years

 

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