...:02 PM Subject: Why don't male nipples work? There have...by Gould, on why some male mammals have nipples. My wife...looking for explanations based on why female mammals are more likely...be primary care givers than male mammals. There are still examples...is there some developmental reason why it is difficult? -- Yours, Bill...have sagged badly and the nipples point straight down to the...

... if it is so simple, why don't male mammals produce a pulse of female hormones to make ... the ability to breast feed by males would be quite an advantage in...Your question might be re-phrased Why is strict monogamy so rare in...> there are transient or incoming males) . . . all militate against infant-nurturing ...there could be an advantage to male breast feeding. I would lean more...

...if it is so simple, why don't male mammals produce a pulse...the ability to breast feed by males would be quite an advantage in...decreasing factors of having breast-feeidng males? Could it be that the increased... even more increased in lactating males) that makes the apparent parenting ... is exceedingly easy to make males lactate (couple mutations). AFAIK, there ...

...response here is to ask, if it is so simple, why don't male mammals produce a pulse of female hormones to make ...that the ability to breast feed by males would be quite an advantage in at...-decreasing factors of having breast-feeidng males? Could it be that the increased cancer...(perhaps even more increased in lactating males) that makes the apparent parenting ...

...response here is to ask, if it is so simple, why don't male mammals produce a pulse of female hormones to make ...that the ability to breast feed by males would be quite an advantage in at...fitness-decreasing factors of having breast-feeidng males? Could it be that the increased cancer... (perhaps even more increased in lactating males) that makes the apparent parenting ...

... response here is to ask, if it is so simple, why don't male mammals produce a pulse of female hormones to make ... that the ability to breast feed by males would be quite an advantage in at...fitness-decreasing factors of having breast-feeidng males? Could it be that the increased ... rate (perhaps even increased in lactating males) makes the apparent parenting advantage not ...

... not looking for explanations based on why female mammals are more likely to...case one might expect that functional male nipples could be an advantage and...or is there some developmental reason why it is difficult? Men do get...that during puberty female breast and nipple tissue is stimulated to grow ... that the second stage works in males too are trivial. But ...

... response here is to ask, if it is so simple, why don't male mammals produce a pulse of female hormones to make ... that the ability to breast feed by males would be quite an advantage in at...fitness-decreasing factors of having breast-feeidng males? Could it be that the increased cancer rate (perhaps even increased in lactating males) makes the apparent parenting advantage not worth...

... to ask, if it is so simple, why don't male mammals produce a pulse of female hormones ...I think that the ongoing increased specialization of both male and female roles (selected via the Baldwin effect )...). Also, the mass social confusion produced by males broadcasting an inappropriate social/sexual signal (enlarged breasts and nipples) would require the evolution of a major psychological ...

... not looking for explanations based on why female mammals are more likely to ...case one might expect that functional male nipples could be an advantage and...or is there some developmental reason why it is difficult? Men do get...that during puberty female breast and nipple tissue is stimulated to grow and...so that the second stage works in males too are trivial. But that...