Editing Orgasm (section)

=== Induced Ovulations ===
{{Main article|Induced ovulation (animals)}}

Some spontaneously ovulating species can occasionally undergo mating-induced preovulatory LH surges. These species require mating to stimulate the vagina and cervix, resulting in ovulation in the females. Research suggests that the female orgasm evolved from copulation-induced ovulation.
<ref>{{cite journal |doi = 10.1073/pnas.1910295116 |title = An experimental test of the ovulatory homolog model of female orgasm |date = 2019 |journal = Proceedings of the National Academy of Sciences |volume = 116 |issue = 41 |pages = 20267–20273 |pmid = 31570579 |bibcode = 2019PNAS..11620267P | vauthors = Pavlicev M, Zupan AM, Barry A, Walters S, Milano KM, Kliman HJ, Wagner GP |doi-access = free |pmc = 6789565 }}</ref>