Yes male guinea pigs have nipples! In fact all mammals have nipples male and female alike.
However in most cases the male nipples are much less pronounced than the female nipples and they may even be hidden beneath the fur.
But they’re definitely there!
So why do male mammals have nipples? Well nipples are actually a vestigial body part meaning they’re leftovers from our evolutionary past.
nipples are thought to have evolved to help keep newborn mammals warm and protected.
But since males don’t usually give birth they don’t need their nipples for that purpose.
Still the fact that male mammals have nipples is a pretty interesting quirk of nature.
And who knows maybe someday scientists will find out that male nipples serve some other purpose that we don’t even know about yet!
Why Do Male Guinea Pigs Have Nipples?
Male guinea pigs have nipples for the same reason that male humans and other mammals have nipples: they are a vestigial remnant of a time when all mammals had both male and female sex organs.
In mammals the male and female sex organs develop from the same tissue in the embryonic stage.
This tissue later differentiates into either the ovaries or the testes depending on the individual mammal’s sex.
However in some cases vestigial remnants of the opposing sex organs can remain.
In the case of male guinea pigs these vestigial nipples are a reminder of their evolutionary history.