Aging in cats
The life expectancy of a cat that is living indoors is typically 12–16 years. The life expectancy of a cat living outdoors is typically 2–5 years. Cats living outdoors usually have a much shorter life expectancy and increased mortality 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. By comparison, the average life expectancy of humans in the United States of a newborn baby in 2014 was 79.56 years.
- CIA - The World Factbook -- Rank Order - Life expectancy of humans at birth.
- "Oldest cat ever". Guinness World Records. Retrieved 2015-12-01.