So you didn't bother to look at the link I provided? It starts:
Same-sex socio-sexual behaviours (SSSB) in animals are interactions between members of the same sex which are ascribed to opposite sex courtship and mating behaviours without reproduction (Bailey & Zuk 2009). These include mounting, genital contact, courting and pair bonding (Bagemihl 1999 cited by Scharf & Martin 2013). There is evidence for SSSB in more than 1500 species across the animal kingdom (Monk et al. 2019). Common bottlenose dolphins (Tursiops truncatus), for example, are known to exhibit homosexual behaviour through tactile interactions; members of the same sex, particularly in males (Silva & Spinelli, 2023), have been recorded mounting one another and stimulating the other’s genitals using a flipper, melon, fluke, or rostrum (Serres et al. 2022).
Yes, several non-human male mammals engage in anal penetration of other male animals. This behavior has been documented in various species, primarily among primates and some other mammals.
In Old World primates, male homosexual anal insertion has been recorded in gorillas, orangutans, and several species of macaques, including stumptail, rhesus, and Japanese macaques. This behavior is also observed in some New World primates, such as squirrel monkeys and spider monkeys. Among bonobos, anal intromission between males has been specifically noted. Additionally, male dolphins, including bottlenose dolphins, have been observed engaging in homosexual behavior involving genital rubbing and, in some cases, penis insertion into the anus of another male.
Other species exhibiting this behavior include male American bison, where courtship, mounting, and full anal penetration between males have been documented. Male rams have also been observed performing same-sex mounts with pelvic thrusting and ejaculation, indicating sexual motivation. In some cases, such as with European polecats, exclusive homosexuality with mounting and anal penetration has been observed, though it serves no apparent adaptive function.
These behaviors are often linked to social bonding, dominance establishment, or pleasure rather than reproduction.
So you didn't bother to look at the link I provided? It starts:
I did read it. As I said, none penetrate another.
So how would you define "mounting" with relation to "same-sex sexual behavior" in dolphins?
Climbing on top of. That's a lot different than penetrating.
Here is what Brave AI had to say on the matter:
Do you have any counter-evidence?