Wrote couple of pieces for the icelandic web of science, a Q and A web about scientific topics, about sex related traits and their diversity in nature.
They are in Icelandic, but the central idea is that sex is quite variable in nature. Even in humans a range of traits are found in sex related structures, behaviors and perceptions.
All of it is quite natural. See for instance. Arnar Pálsson. „Hvað hefur áhrif á kyneinkenni og kynhneigð?“ Vísindavefurinn, 5. febrúar 2025, sótt 1. apríl 2025, https://visindavefur.is/svar.php?id=87491.