...except, quite possibly, naked mole rats.
We already knew they lived a lot longer than other rodents, but studies indicate that once a naked mole rat (irrespective of sex or breeding status) reaches maturity, its chance of dying at any given time stays exactly the same.
Needless to say they die eventually - and science suspects it may be a delayed aging not actual immunity to aging.
Mole rats' longevity has been studied for some time, but the fact that they don't seem to experience natural aging at all? That part's new...
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