I have so many questions about evolution
Why do males have nipples but not be able to lactate? Like what possible reason could there be for making sure only half the population can feed infants?
Also, why nose hairs? What are they for, filtering air? Then why don't mouths have them?
Why do we have soft, easily hurt feet if we're supposed to walk barefoot everywhere
Human body stuff... Show more
@kimdanes You know, that's a good question. A quick search of the intarwebs yielded me one site (https://www.sciencedirect.com/science/article/pii/0022519379903345) with a sort-of answer that basically says because lactation is wired into being female, it just hasn't happened much, though the same searched yielded that several mammal species have done so, it looks like there only one kind of bat that does it normally. (search: https://www.google.com/search?q=male+mammals+lactate)