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Only animals from the classes of the Chordata phylum are included. [1] On average, captive animals (especially mammals ) live longer than wild animals. This may be due to the fact that with proper treatment , captivity can provide refuge against diseases , competition with others of the same species and predators .
The 100 species with longest life-spans recorded and verified [1] This is a list of the longest-living biological organisms: the individual(s) (or in some instances, clones) of a species with the longest natural maximum life spans. For a given species, such a designation may include:
Rats, mice, and hamsters experience maximum life-span extension from a diet that contains all of the nutrients but only 40–60% of the calories that the animals consume when they can eat as much as they want. Mean life span is increased 65% and maximum life span is increased 50%, when caloric restriction is begun just before puberty. [57]
However, the species' life expectancy in the wild is only 1.8 to 3.1 years, depending on the local conditions such as traffic volume, hunting, and weather severity. [203] It is not unusual for only half of the young born in one year to survive a full year. [186] [204] After this point, the annual mortality rate drops to between 10% and 30%. [186]
According to the Animal Aging and Longevity Database, the list of animals with negligible aging (along with estimated longevity in the wild) includes: [12] Blanding's turtle (Emydoidea blandingii) – 77 years; Olm (Proteus anguinus) – 102 years; Eastern box turtle (Terrapene carolina) – 138 years
[2] [4] It has also been found that the greater a cat's weight, the lower its life expectancy on average. [4] The current oldest verified cat alive is Flossie, who was born in 1995 in the United Kingdom. [10] A common misconception in cat aging (and dog aging) is that a cat ages the equivalent of what a human would age in seven years each year ...
In just the past two decades, 2000 — 2019, the average global life expectancy increased from 66.8 years to 73.4 years while healthy life expectancy has also improved by 8% over the same period.
For example, a Beagle (average life expectancy 13.3 years) usually lives to around 12–15 years, and a Scottish Terrier (average life expectancy 12 years) usually lives to around 10–16 years. The longest living verified dog is Bluey , an Australian Cattle Dog who died at 29 years.