https://www.sciencealert.com/theres-a-curious-pattern-of-same-sex-sexual-behavior-among-mammals

“A study by Spanish researchers suggests same-sex sexual behavior among mammals − especially primates − is not only common and adaptive but supports social relationships and reduces conflict.”

https://www.usatoday.com/story/news/nation/2023/10/03/animals-same-sex-behavior-more-common-in-social-species-study-says/70991562007/

The actual study

https://www.nature.com/articles/s41467-023-41290-x

sciencealert.com

Curiously, Mammals Keep Evolving Same-Sex Sexual Behavior

Sexual behavior between members of the same sex might have evolved multiple times in mammals, according to a new study, adding to numerous examples found across the tree of life.