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For example, animals that live only a few days or a few years are often not very intelligent. In contrast, the most intelligent animals seem to live longer.

Is this true? Are there any studies to prove or disprove this statement?

{ asked by Derfder }


Limiting the conversation to mammals, and taking relative brain size as a proxy for intelligence (which, of course is not necessarily "true", but at least is quantifiable), the answer is yes: body-size relative brain size correlates with body-size relative longevity in mammals.

using a global database of 493 species, we provide evidence showing that mammals with enlarged brains (relative to their body size) live longer and have a longer reproductive lifespan (González-Lagos et al.).

They present data by species in the paper, which is available free online, but so as to have something on SE, I've mocked up a chart based on the averages they give for each mammal order: by Oreotrephes, after González-Lagos et al. 2010 Fig 1

{ answered by Oreotrephes }