Cat years
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The life expectancy of a cat that is kept indoors is typically 12–15 years. The life expectancy of a cat living outdoors is typically 2-5 years. Cats living outdoors[1] usually have a much shorter life expectancy due mainly to external environmental conditions and dangers such as traffic accidents, intentional acts of violence, poisoning, diseases from other cats, and fighting with other animals. However, some cats may attain the age of 21 years or more.[2] By comparison, the average life expectancy of humans in the United States at birth in 2014 was 79.56 years.[3] 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.[4]
The table below shows the correspondence between a cat's chronological age and the age of a human at a comparable stage of development.
| Cat calendar years | Equivalent human age |
|---|---|
| 1 | 15 |
| 2 | 24 |
| 3 | 28 |
| 4 | 32 |
| 5 | 36 |
| 6 | 40 |
| 7 | 44 |
| 8 | 48 |
| 9 | 52 |
| 10 | 56 |
| 11 | 60 |
| 12 | 64 |
| 13 | 68 |
| 14 | 72 |
| 15 | 76 |
| 16 | 80 |
| 17 | 84 |
| 18 | 88 |
| 19 | 92 |
| 20 | 96 |
| 21 | 100 |
| 22 | 104 |
| 23 | 108 |
| 24 | 112 |
| 25 | 116 |
The oldest cat ever recorded was Creme Puff, who died in 2005, aged 38 years, 3 days.[5]
See also
References
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ "What is the life span of the common cat?", About.com.
- ↑ CIA - The World Factbook -- Rank Order - Life expectancy of humans at birth.
- ↑ "Cats Age Conversion Chart", About.com.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
