Why do bats have such bizarrely long lifespans?
In mammals, there's a relatively simple relationship among metabolism, body mass, and lifespan. For the most part, as the size of the mammal goes up, its metabolism slows down and its longevity increases. There are exceptions, and we are one of them. We're much longer lived than other mammals with a similar body mass.
https://arstechnica.com/science/2019/06/why-do-bats-have-such-bizarrely-long-lifespans/?utm_source=tldrnewsletter