PsychoSarah
Chaotic Neutral
No, it has an immense advantage, animals just can't choose to have the mutations necessary to develop it. -_- if it wasn't an advantage, the more intelligent of our ape ancestors would not have had the reproductive success. It just so happens that intelligence is by no means some perfect trait without any drawbacks. One of those drawbacks now is competing with us... which is why you don't see a bunch of bipedal ape species around besides us.So there is no reason, in whatever point of view, to spend huge energy to evolve the intelligence.
-_- this is a silly question. After all, that would depend on how intelligent the animal was to begin with, and if it would actually need to increase brain size or energy expenditure in order to become such a fraction more intelligent. Humans with an IQ of 160 and humans with an IQ of 100 have practically the same dietary needs, so I don't understand why you think a measly 1% would do much. Basically, you asked a question that has too many answers so as to be meaningless thanks to how broad it is, and how variable the answers even applying to the same species would be.By the way, how much energy is needed to increase 1% of intelligence?
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