There are plenty of documented examples of same-sex relations in the animal kingdom, but is it fair to call them gay? And if this behavior does reflect a genetic abnormality, what does that mean for Darwin’s Theory of Evolution? If the goal for a species is to mate, why would a gay gene get passed on, lowering the rate of reproduction?
Those are the questions posed by the BBC Earth in a fascinating exploration of homosexual tendencies in species other than humans.
Here’s a look at what they observed:
Japanese macaques
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It is common among the females to bump and grind on each other, which scientists understand as a form of pleasure-seeking. The females enjoy more positions than the males — from the “double foot clasp mount” to the “jockey position” — so are they simply seeking out what makes them feel good? They’ll stare into each others eyes, which from our perspective looks rather intimate. Still, they’ll also mate with the males, so it isn’t quite proper to think of them as “lesbian macaques.”
Fruit flies
For the first 30 minutes of a male fruit fly’s life, he will try to mate with any other fruit fly he can find — male or female. Eventually he’ll learn the smell of the female and focus his attention on them. So as far as evolution goes, the trial and error approach favors bisexuality until the males can distinguish the two sexes better.
Flour beetles
Male flour beetles use an even stranger technique that can still be explained with evolution. They’ll go so far as to deposit sperm in other males, but when those receiving males then mate with a female, there is the possibility for sperm transference. So more homosexual mating, more offspring.
Laysan albatross
These birds typically mate for life, and on the island of Oahu, Hawaii, the population includes 31% of pairings of two unrelated females. They’ll still produce offspring — a male albatross will sneak off from his mate and fertilize the egg of one of the other females (which never happens in humans), and the female pair will raise the chick. Even here, researches note a subtle evolutionary advantage for the practice. The male albatrosses that mate outside their pairing are typically the strongest of the males, so their genes get passed down through the female/female pairings. Still, the albatrosses can’t be called “gay.” In populations where the male/female ratio is more even, females don’t choose to pair with other females.
Bonobos
Did you know that our distant cousins, the bonobos, really like sex? Sexual activity between bonobos is referred to as the “bonobo handshake” (we’re pretty sure we’ve heard a similar term — “gay handshake” — thrown around after a few vodka sodas), and they take it any way they can get it: male/female, male/male, female/female. In addition to procreation, sex in bonobo communities is used as a way of fortifying social bonds. After two males fight, it’s common for them to engage in genital-to-genital touching called “penis fencing” (which we think would be a hit in the straight human world). But still, at most they can be described as bisexual.
Domestic sheep
But then there are domestic sheep. Even when there are ample and fertile females around, about 8% of domestic sheep prefer the sexual company of other males. Neuroscientists in 1994 concluded that the hypothalamus (the part of the brain the controls the release of sex hormones) was smaller in the homosexual sheep. A 1991 study suggests a similar phenomenon in gay male humans. So how to explain this one in terms of Darwin’s Theory? Well, while it doesn’t benefit the homosexual sheep themselves, the relatives of those sheep may be reaping certain advantages. The same gene that results in a smaller hypothalamus in some males might make their female siblings more fertile. Still, this has only been observed in domestic sheep (not wild), and some scientists argue that because sheep have been intentionally bred to foster the most fertile females, the human intervention may have given rise to the “homosexual sheep.”
Conclusion? Humans seem to be the only wild animal population containing our understanding of “homosexual” members. But these studies show that species across the animal kingdom engage in sexual activity for far more reasons than procreation, be that pleasure or social connection. It’s that nuance that shatters (as if it needed any more shattering) the religious right’s view of sex as solely a means to produce offspring.
Turns out, as always, things are a bit more complicated.
Ladbrook
Disgusting and sinful. I hope the Family Research Council gets on this quickly or an awful lot of animals are going to end up in hell. John 3:16.
grero
The book to get is Biological Exuberance: Animal Homosexuality and Natural Diversity by Bruce Bagemihl. If you want to see the quotes from the book for all the great apes, read this table: http://grero.com/#_Toc347564542
demented
So in other words, most animals are BI-sexual and will sometimes seek sex or relationships with either gender based either on emotional ties or on wanting sex.
Why is it the human animal is expected to be all gay or straight again, and anyone who doesn’t pretend to be 100% is considered suspicious or a liar?
DonW
@grero: Agreed — read the book. It’s a far more complex and fascinating topic than this extremely superficial article suggests.
jason smeds
The bonobos are adorable. I’m all for penis fencing, preferably with someone who has 10 inches.
PLAYS WELL WITH OTHERS
That pic of “bonobos” is actually Rick Santorum and Justice Roy Moore taken at the conserative values summit…………..
Captain Obvious
Don’t care they’re gay or straight. Animal porn is gross. Well… the bonobos were more adorable than gross, but still… eww. I can’t even look at dogs humping.
Stache99
@Captain Obvious: I think you missed the point.
Captain Obvious
@Stache99: Not really, it’s an old point that’s been made a thousand times over… homophobes don’t care either way.
Nixter
@demented: So true, both gays and straights are guilty of this black/white way of thinking. Pathetic.
Cam
“Conclusion? Humans seem to be the only wild animal population containing our understanding of “homosexual” members. ”
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Is that a joke? Biological exuberance specifically pointed out the desperation that other scientists would go through to prevent saying that any behavior was homosexual. IT even pointed out that two female chimps were pictured stroking each others crotches, making noises, and shuddering, and it was written up as a possible greeting.
This article seems more along those lines, and to the author, i you are going to postulate that humans are the only population with “Homosexuals” you may want to read the examples of the male swans as well as multiple other examples.
If you’re just going to read one news article written by some scientist who doesn’t like the idea, then don’t bother posting.
Gruffling
Nothing new. It’s fairly common knowledge a lot of species of mammal and bird will mate for life with another of the same sex. Birds get a little bit bi since one will shack up with a female then kick her out when she lays eggs but some mammals won’t even bother with procreation because of their bonds as a couple so to speak.
Captain Obvious
@Cam: I’m more disturbed by the silly agenda a lot of people online seem to have now with pretending everyone is secretly bisexual and too afraid to come out about it.
Bisexuals are just sooo common and all over the place. There’s just no way a person can be gay or straight they HAVE to be bisexual!
When you go outside go hit on the first guy you see and don’t take no for an answer because he’s secretly bisexual and just afraid to admit his attraction to you. *vomit*
Cam
@Captain Obvious:
Agreed, the swans for example exclusively would pair bond in single sex pairs, and the male male pairings were even known to steal eggs from other nests, and raise them as their own. No bisexuality in that pairing.
PRINCE OF SNARKNESS aka DIVKID
@grero: Dude, fascinating thought provoking site!
demented
@Cam: Why does it bother you so much to hear that bisexuality might be common among animal species, especially the idea that it might be much more common than homosexuality, or that it might tell us something about our own?
And BTW, being in a pair bond with a same-sex partner does not mean that they are not capable of bisexuality. You could only determine that if they had sequential relationships with other swans of the same gender.
Cam
@demented:
I have no problem with the idea of bisexuality in the animal kingdom. What I have a problem with is the attempt by scientists to try to pretend that any behavior along those lines is not what it appears. I.E. two female chimps rubbing each others vagina and shrieking is described as “Greeting behavior”.
As for your final comment, that is where your odd agenda seems to become clear. The Male Swan pairs mentioned were exclusively paired together for decades. So nice try.