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Humans are still evolving, and because of that, some people have traits that have mostly disappeared by now, such as thick hair all over their bodies. Many species of mammals have more than two nipples, and it is possible that at some earlier time, proto humans had more than two nipples. Because humans very rarely have multiple births, more that two nipples are not necessary, so we are evolving away from that trait. That is my personal opinion, and I can not back it up with any factual evidence, so don't take it as a fact.

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17y ago
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12y ago

because your nipples are cold and need something to warm them

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Wiki User

15y ago

Yes, and so do some men.

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Q: Why do some people have hairy nipples?
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