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cat years
The life expectancy of a cat is typically 12–15 years. However, some cats may attain the age of 21 years or more.〔("What is the life span of the common cat?" ), About.com.〕 By comparison, the average life expectancy of humans in the United States at birth in 2014 was 79.56 years.〔(CIA - The World Factbook -- Rank Order - Life expectancy of humans at birth ).〕 A one-year-old cat is roughly comparable, in developmental terms, to a 15-year-old-human. Subsequent years of a cat's life add progressively fewer years to its human age equivalent, so that a 15-year-old cat is roughly comparable, developmentally, to a 76-year-old human.〔("Cats Age Conversion Chart" ), About.com.〕
The table below shows the correspondence between a cat's chronological age and the age of a human at a comparable stage of development.
The oldest cat ever recorded was Creme Puff, who died in 2005, aged 38 years, 3 days.
== See also ==
* Aging in dogs
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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