Why do animals aging faster than humans?

Question

Why do animals aging faster than humans?

Answer 1

turtles can have 200 years since their metabolism is very low

Answer 2

they don't necessarily.  for the ones that do, their heart rate is higher and after a while the heart muscle wears out.

Answer 3

Because most animal species have shorter lifespans than humans. Humans age faster than those  species with longer lifespans, like Galapagos tortoises

Answer 4

not all animals age faster than humans.Take a turtle for example,it can live up to 150 years.

Answer 5

Apart humans, other primates can be long-lived, though none as much as we are. Rhesus monkeys (Macaca mulata) can live over 35 years and 25/30 year-old animals tend to display the age-related patterns found in a 50/60 year-old human. Interestingly, rhesus monekys have a MRDT similar, if not superior, to that of humans, showing that MRDT values are not perfect estimates of the rate of physiological aging. Chimpanzees (Pan troglodytes), our closest relatives, live up to 73 years and, although their aging process has not been studied in detail, they show age-related changes typical of humans at considerably earlier ages. Their MRDT is about 8, so the same as humans (Hill et al., 2001). It could be that chimpanzees age at the same pace as humans but the onset of aging occurs sooner in them (de Magalhaes, 2006). As for humans (Homo sapiens), our maximum lifespan is 122 years, recorded by the late Jeanne Calment (Allard et al., 1998), and is a record among primates. On the other hand, some primates can be shorter-lived and show a fast rate of aging--though not as fast as rodents. These tend to be species more distant from humans, as primates biologically and evolutionary closer to humans tend to be long-lived since it is suspected that longevity increased in the lineage leading to humans (Cutler, 1979). Examples of short-lived primates include marmosets (genus Callithrix), dwarf and mouse lemurs (genera Cheirogaleus and Microcebus), tarsiers (genus Tarsius), and animals of the Galagonidae family (Austad, 1997c). These animals tend not to live more than 20 years, show age-related changes in their second decade of life, and have short life cycles attaining sexual maturity in less than 2-3 years (Bons et al., 1992; Austad, 1997c; Harada et al., 1999).

A well-documented mechanical senescence process in mammals is tooth erosion (Finch, 1990, pp. 196-202), a major problem for several species such as hippopotamus, horses, elephants, etc. Long-lived species evolved creative mechanisms to cope with this. For instance, elephants have up to six sets of molars. Still, and although the Nabarlek (Petrogale concinna) could be an exception, mammals are not polyphyodont.

One of the most interesting features of mammalian aging is that its phenotype is similar in most species (Finch, 1990, p. 619; Miller, 1999). Female reproductive senescence at mid-life, osteoporosis, arthritis, vascular lesions, cataracts, etc. are quite common among well-studied mammals. Despite some exceptions, such as certain marsupials like Antechinus, the pathophysiology of aging is remarkably similar in mammals.

Answer 6

no.

Answer 7

You are right, most wild animals live much shorter life's than humans.  The majority of insect rarely live longer than a year.  It may not be so much aging as completion of a life cycle.  We humans share a trait with few other animals.  We live way beyond our natural life cycle.  At least modern humans do.

In the wild world there are two prime directives.  Survive and reproduce.  Some of us biologist limit it to one:  survive to reproduce.  So all an animal has to do is stay alive long enough to mate.  This is basically what happens to most animals.  Some of the higher animals, like elephants and gorillas and giant tortoise can live long life's, beyond the reproductive stage.  But few wild animals die of old age.

Answer 8

It's not an absolute rule, but most species live for about a billion heartbeats.