Cat years

Q: Great site. I'm trying to find
out the ratio between cat years and real time.

Blu was born Aug 1st 1980. She
is slowing down rapidly, and I was wondering

what her age would be if she were
human.

Thanks,

michael

A: Michael-

I do not know if anyone publishes
a comparison of cat years vs. human years

as can be found for dogs.

My best estimate is this:
the first year of a cat's life is probably

metabolically equivalent to about
13 to 15 "human years". The next year is

probably equivalent to another
10 or so years. After that, each year is

probably close to the metabolic
equivalent of about 4 years for a human.

Using this reasoning, an 8 year
old cat is roughly equivalent to a 49 year

old human. a 20 year old cat would
be equivalent to a 97 year old person. I

am not sure that this reasoning
is really valid but it is the best I can

think of.

Mike Richards, DVM