001. Aging
Description
This article is from the Medical Information FAQ, posted to rec.pets.cats newsgroup. Maintained by Cindy Tittle Moore with numerous contributions by others.
001. Aging
Most cats will reach about 11 or 12 years of age. Some make it 18 and very few to 20 and beyond. Much of this will depend on whether or not a cat is indoors or allowed outdoors. Outdoor cats average about 8 years and indoor only cats quite often reach 15 or more years of age.
As for "cat years" versus "human years", according to material provided by the Gaines Research Center, cats will age 15 years in the first year (10 in the first six months!) and 4 years for every year after that. Other vets will say 20 years for the first year, 4 years for each year thereafter.
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