This list includes long-lived organisms that are currently still alive as well as those that are dead.ĭetermining the length of an organism's natural lifespan is complicated by many problems of definition and interpretation, as well as by practical difficulties in reliably measuring age, particularly for extremely old organisms and for those that reproduce by asexual cloning. The definition of 'longest-living' used in this article considers only the observed or estimated length of an individual organism's natural lifespan – that is, the duration of time between its birth or conception, or the earliest emergence of its identity as an individual organism, and its death – and does not consider other conceivable interpretations of 'longest-living', such as the length of time between the earliest appearance of a species in the fossil record and the present (the historical 'age' of the species as a whole), the time between a species' first speciation and its extinction (the phylogenetic 'lifespan' of the species), or the range of possible lifespans of a species' individuals. Verified individual record holders, such as the longest-lived human, Jeanne Louise Calment, or the longest-lived domestic cat, Creme Puff.The oldest known individual(s) that are currently alive, with verified ages.For a given species, such a designation may include: 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 lifespans. For the oldest known life forms, see earliest known life forms.

Longest living animal age