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How different would it be reasonable to assume that the physiological structure of fantasy races are from humans? With dwarves for example there's some pretty commonly stated differences like thicker bones, tougher/leathery skin, more/stronger hair, but what are some more obscure adaptations that could logically exist, and how might some of the common traits be explained biologically?
Might dwarves have a third lung/more alveoli for filtering toxins/drawing more oxygen from their underground environments? More neurons/neural receptors to more easily repair damage from toxic underground fumes/excessive alcohol consumption? Larger livers? How might a dwarf's ability to seemingly handle extreme heat and extreme cold better than a human be explained? Cold seems easier to explain than heat, more subcutaneous fat/brown adipose tissue, more blood vessels, faster heat rates, but a lot of adaptations that help deal with cold seem like they would be detrimental to dealing with heat.
What are some obscure or extreme adaptations that other races might have beyond just the obvious pointy ears, hairy feet etc.
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>>54198453
What did dwarves descend from? Were they hunter-gatherers who spent the night in tunnel networks or were they hunters of subterranean prey? The latter would have more adaptations for digging like hands more suited to digging and a torpedo shaped body. The less often proto-dwarfs saw the sun, the more adaptations they would have for living underground.
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