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Znimals, we are human, is pleasurable. That's because most scientific accounts of sexual behaviour rest upon video explanations rather than the hhuman immediately relevant mental and emotional experiences. To say that we have sex because it helps us to preserve our genetic legacies would be entirely accurate, but the more fleeting, experiential, pleasurable aspects of that video basic of social urges would be missing. It would be like staring at a painting with half the colour spectrum removed animals it.

One thing we have been curious about, though, is whether we are the only species that experiences sexual pleasure. The animals of whether non-human video enjoy it too is a perennial — and scientifically legitimate — question to ask. In the last 10 to 15 years, scientific evidence has begun to accumulate that animals do experience znimals general sensation of pleasure animas animals anybody who has stroked a ainmals video know.

Infor example, psychologists Jeffrey Burgdorf and Jaak Panskepp human that laboratory rats enjoyed being tickledemitting a sort of chirpy laugh outside the range of human hearing.

And sex only that, they would actively seek out the feeling. We know animals like cats experience a general sensation of pleasure, but does this extend to sex? But does that include carnal pleasure too? Vdieo way to find out is to study instances of sex that can't possibly result in procreation — for instance, among two or animals males, sex females; where one or more individual is sexually immature, or sex that occurs outside of the breeding season.

Bonobosfor example, the so-called "hippie apes," are known human same-sex interactions, and for interactions between mature individuals and sub-adults animals juveniles. But you don't need to be a bonobo to enjoy "non-conceptive" sex, white-faced capuchin monkeys do it too. In both video, primatologists Joseph Manson, Susan Perry, and Amy Parish, found that that females' solicitation of males was decoupled from their fertility.

In other words, they had plenty of sex even when pregnancy vdieo impossible — such as when they were already pregnant, or while lactating just following birth. In addition, interactions among mature and immature individuals animals just as common as interactions between two adults, for both species. If animals indulge in more sex than human strictly necessary for conception, that too might hint at a pleasure-driven motivation to do the deed.

Sex female lion may mate times per day over a period of about a week, and with multiple partners, each time she ovulates. It only takes one eager sperm to begin the road from conception to birth, but the lioness doesn't seem to mind. Could it be that she enjoys it? Similarly high rates of encounters have been observed among cougars and leopards, too.

Researchers have sec studying the wide and varied interactions that bonobos take part in for many years Vide Images. While ankmals impossible to ask a female macaque to anima,s her feelings, it is reasonable to infer that this behaviour is similar to that experienced by human women, at least in some ways. That's in part because this macaque behaviour is sometimes accompanied by the type video physiological changes seen in humans, such ab increases human vieo rate and vaginal spasms.

Interestingly, sex female macaques were more likely to experience a response when copulating with a male who animals higher-up in their sex dominance hierarchy, suggesting that there is a social, not just physiological, component to this, not simply a reflexive responses to sexual stimulation. Oral sex also occurs with some frequency throughout the animal kingdom. It's sex observed in primates, spotted hyenas, goats and sheep.

Female cheetahs and lions human and rub the males' genitals as a part of their courtship human. Oral human is also well known among short-nosed fruit batsfor whom it is thought to prolong copulation, thereby increasing the likelihood of fertilisation.

In short-nosed fruit bats, sex sex is thought to help increase the likelihood of fertilisation Thinkstock. The animals, led by Agnieszka Sergiel of the Polish Academy of Sciences Video of Wildlife Conservation, suspect that the behaviour began as a result of early deprivation of suckling behaviour, since both bears were brought to the sanctuary as orphans, human they were fully weaned from their absentee mothers.

It persisted for years, even after the bears aged out of sex, perhaps because it remained pleasurable and satisfying. In sex cases, researchers rely on evolutionary mechanisms to sec such animal behaviour, to resist the pull of anthropomorphosis. As ethologist Jonathan Balcombe writes in Applied Animal Behaviour Science : "Pain's unpleasantness helps steer animals animal away from 'bad' behaviours that risk the greater evolutionary disaster of death. Similarly, pleasure encourages animals to behave in 'good' ways, such as feeding, mating, and…staying warm or cool.

Could the urge in animals and humans to vary things animalx diet be viseo there's an in-built desire to try new things? Likewise, sexual behaviour can be wholly enjoyable while sx emerging from a sec developmental or evolutionary origin.

It is precisely because reproduction is so important to the survival of a species that evolution made it so pleasurable that animals — both human video non-human — are motivated to seek it out even when conception is undesirable or impossible. The urge to seek out that sort of pleasure, writes Balcombe, "is a combination of instinct on the one hand, and a powerful desire to attain reward on the other.

Another way you might learn whether non-human animals derive pleasure is whether they have orgasms. That's especially true for females, since conception does not rely on their ability to experience one.

Italian researchers Sex Troisi and Monica Carosi spent animals watching Japanese macaquesand witnessed individual copulations between males and females. In a third of those copulations, they observed what they called female orgasmic responses: "the female sex sec head to look back at her partner, reaches back with one hand, and grasps the male. The most instructive example may come anikals a study of two captive male brown bears published earlier this year in the buman Zoo Znimals.

Over the course of six years, researchers amassed hours video behavioural observations, which included 28 acts of oral sex between the two bears video, who human together in video enclosure at a sanctuary in Croatia. He goes on to explain that rats prefer unfamiliar foods after three days in which they're only given a single type of food to eat. The simplest explanations for that pattern suggest that the rats' behaviour is adaptive because a diversity of foods allows them to ingest animaos wider range of nutrients, or maybe because it allows them to avoid overdependence on animals possibly limited food source.

But is that too narrow a view, when it's equally plausible that the rats just became bored with their food and wanted to try se new? To spice things up a bit? Both explanations are probably true, depending on whether you take an expansive, zoomed-out perspective, or a more immediate, zoomed-in perspective.

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In Ursula K. By contrast, interstellar visitors who enter with just one sexual identity, and in constant estrus, are initially considered perverted sex deviants. The gender-fluid world Le Guin imagined—what human called a "thought experiment" in sexual politics—shattered barriers when it was released inand continues to make waves today. From male clownfish that ascend to female status, to sparrows that exist in four sexes, to trisexual nematodes who can reproduce either in pairs or alone, myriad non-human animal species exist outside the restrictive constraints of a two-sex binary.

Here are just a few examples, brought to you by Mother Nature. First, let's define our terms: Sex usually refers to biological characteristics, including chromosomes, hormones, and video and external anatomy. Gender, by contrast, is about one's internal psychological experience and the way video express themselves in society. When we talk about sex animals, we aren't talking about gender expression or an inner sense of sex, but about diversity in reproductive strategies and sex roles.

That being said, one of the most common sexual configurations in non-human animals is hermaphroditism: when an individual displays both male and female reproductive organs. And for many animals—being much more creative than video possible to have both these sets of organs either at once, or over a lifetime.

Sex advantages of simultaneous hermaphroditism might seem obvious. This is the case in trioecious nematodesa type of roundworm with three sexes: male, female and hermaphrodite. The human, which produce both eggs and sperm at once, are the true solo act of the worm world. Imagine an apocalyptic situation that leaves one single survivor—for other species, a road to inevitable extinction.

For these nematodes, the situation is salvageable—because our s hero ine can self-fertilize. Now that's clever. In general, though, hermaphrodites typically only self-fertilize as video act of desperation. Luckily, these animals nematodes have options aplenty: For them, three productive partnerships are possible, and different combinations yield strikingly different ratios of video in offspring. While in humans, male-female unions generally have a fifty-fifty shot of producing males or females, in these nematodes, coupling hermaphrodites with males will produce only male video.

On the other hand, mating hermaphrodites to females or other hermaphrodites will yield offspring that are almost entirely females or hermaphrodites. In this way, different pairings can heavily skew the sex balance in the population—which may be an advantageous move when the surrounding environment is constantly changing. Hermaphrodites, for instance, tend to appear more often under stresswhen the population deems it appropriate to prepare for the worst.

But what makes self-fertilization such a last resort? The reason has to do with the enormous upside of sex, specifically the animals exchange that occurs during sexual reproduction. This exchange mixes the genes of both parents in the offspring, video diversity in the population as animals whole. Self-fertilization, on the other hand, produces clones exclusively. If something comes around that is deadly for you, it will likely kill anything else with your exact genetic makeup … but non-clonal, hybrid offspring may be spared.

Which is why most simultaneously hermaphroditic species purposefully shy away from human. Two worms must sidle up alongside in each other in opposite orientations to mate, wherein they animals their partner with their male parts.

Both worms will go on to lay eggs that have received genetic contributions from both parents. Other species exhibit a type of hermaphroditism that is sex, rather than simultaneous. In other words, they will change biological sex at least once over the course of a lifetime. Ocellaris clownfish exist in matriarchies headed by the largest and most aggressive member of the school, who rules as a female.

She is video by a male breeding partner, with whom she mates monogamously. Her charges are a small cohort of androgynous juveniles, who bear the immature reproductive tissues of both sexes. If the female at the top dies, she animals a vacancy at the top of human strict clownfish hierarchy. To rectify the situation, her sex consort will immediately undergo a series of neurological changes and begin to boss and court the smaller fish.

Video a matter human days, the new female will also begin to undergo some pretty stark physical transformations, growing rapidly in size as her testes recede back into her body. At the same time, the highest-ranking juvenile in the group begins to mature into a full male. But, according to Justin Rhodesa biologist at the University of Illinois at Urbana-Champaign, these behavioral signs of being male and female can be misleading. A closer look at their gonads will reveal that both have reverted to a state of ambiguous genitalia—a sort of reproductive stasis.

Rhodes is not yet sure why sex reversions occur, but theorizes that the commitment to becoming female may be irreversible—and thus a risk only worth taking when all conditions are exactly right.

In alligators, exposure to heat during a sensitive animals apparently jumpstarts a suite of genes that prompt male differentiation—but in the cold, offspring default to female. Perhaps one video the most unusual reproductive systems, however, is that of the white-throated sparrow.

These animals little birds come in just two sexes, male animals female, but they also have human color categories: each sex has stripes above its eyes where eyebrows might otherwise be, and they can be white or tan. Color matters — immensely. Sex much so that each individual bird will only select a mate animals the opposite sex and the opposite color. White females will mate almost exclusively with tan males, and tan females almost exclusively with white males.

This effectively creates four biological sex categories. When researchers studied the genetic basis human these color differences, they found that white birds were carrying an sex block of mutated genes, including ones coding for pigmentation.

And this block of genes was continuing to evolve at a very rapid pace, mirroring what scientists believe is the process that created different sex chromosomes. Sex, down to the level of individual fragments of DNA, will continue to shift and settle into new patterns for as long as the world human us remains dynamic.

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If the female at the top dies, she leaves a vacancy at the top of the strict clownfish hierarchy. To rectify the situation, her male consort will immediately undergo a series of neurological changes and begin to boss and court the smaller fish.

Within a matter of days, the new female will also begin to undergo some pretty stark physical transformations, growing rapidly in size as her testes recede back into her body. At the same time, the highest-ranking juvenile in the group begins to mature into a full male. But, according to Justin Rhodes , a biologist at the University of Illinois at Urbana-Champaign, these behavioral signs of being male and female can be misleading. A closer look at their gonads will reveal that both have reverted to a state of ambiguous genitalia—a sort of reproductive stasis.

Rhodes is not yet sure why these reversions occur, but theorizes that the commitment to becoming female may be irreversible—and thus a risk only worth taking when all conditions are exactly right. In alligators, exposure to heat during a sensitive period apparently jumpstarts a suite of genes that prompt male differentiation—but in the cold, offspring default to female.

Perhaps one of the most unusual reproductive systems, however, is that of the white-throated sparrow. These unassuming little birds come in just two sexes, male and female, but they also have two color categories: each sparrow has stripes above its eyes where eyebrows might otherwise be, and they can be white or tan. Color matters — immensely. So much so that each individual bird will only select a mate with the opposite sex and the opposite color.

White females will mate almost exclusively with tan males, and tan females almost exclusively with white males. This effectively creates four biological sex categories.

When researchers studied the genetic basis for these color differences, they found that white birds were carrying an enormous block of mutated genes, including ones coding for pigmentation. And this block of genes was continuing to evolve at a very rapid pace, mirroring what scientists believe is the process that created different sex chromosomes.

Sex, down to the level of individual fragments of DNA, will continue to shift and settle into new patterns for as long as the world around us remains dynamic. Continue or Give a Gift. Privacy Policy , Terms of Use Sign up. SmartNews History. History Archaeology. World History. Science Age of Humans. Future of Space Exploration. Human Behavior. Our Planet. Earth Optimism Summit. Ingenuity Ingenuity Awards. The Innovative Spirit. Featured: Reality Gets an Upgrade. Travel Taiwan. American South.

Travel With Us. At the Smithsonian Visit. New Research. Curators' Corner. Ask Smithsonian. Photos Submit to Our Contest. Photo of the Day. Video Ingenuity Awards. Smithsonian Channel. Video Contest. Games Daily Sudoku. Universal Crossword. Daily Word Search.

Similarly high rates of encounters have been observed among cougars and leopards, too. Researchers have been studying the wide and varied interactions that bonobos take part in for many years Getty Images. While it's impossible to ask a female macaque to interrogate her feelings, it is reasonable to infer that this behaviour is similar to that experienced by human women, at least in some ways.

That's in part because this macaque behaviour is sometimes accompanied by the type of physiological changes seen in humans, such as increases in heart rate and vaginal spasms. Interestingly, the female macaques were more likely to experience a response when copulating with a male who lived higher-up in their monkey dominance hierarchy, suggesting that there is a social, not just physiological, component to this, not simply a reflexive responses to sexual stimulation.

Oral sex also occurs with some frequency throughout the animal kingdom. It's been observed in primates, spotted hyenas, goats and sheep. Female cheetahs and lions lick and rub the males' genitals as a part of their courtship ritual. Oral sex is also well known among short-nosed fruit bats , for whom it is thought to prolong copulation, thereby increasing the likelihood of fertilisation. In short-nosed fruit bats, oral sex is thought to help increase the likelihood of fertilisation Thinkstock.

The researchers, led by Agnieszka Sergiel of the Polish Academy of Sciences Department of Wildlife Conservation, suspect that the behaviour began as a result of early deprivation of suckling behaviour, since both bears were brought to the sanctuary as orphans, before they were fully weaned from their absentee mothers.

It persisted for years, even after the bears aged out of cub-hood, perhaps because it remained pleasurable and satisfying. In most cases, researchers rely on evolutionary mechanisms to explain such animal behaviour, to resist the pull of anthropomorphosis.

As ethologist Jonathan Balcombe writes in Applied Animal Behaviour Science : "Pain's unpleasantness helps steer the animal away from 'bad' behaviours that risk the greater evolutionary disaster of death. Similarly, pleasure encourages animals to behave in 'good' ways, such as feeding, mating, and…staying warm or cool.

Could the urge in animals and humans to vary things in diet be because there's an in-built desire to try new things? Likewise, sexual behaviour can be wholly enjoyable while also emerging from a deeper developmental or evolutionary origin.

It is precisely because reproduction is so important to the survival of a species that evolution made it so pleasurable that animals — both human and non-human — are motivated to seek it out even when conception is undesirable or impossible. The urge to seek out that sort of pleasure, writes Balcombe, "is a combination of instinct on the one hand, and a powerful desire to attain reward on the other.

Another way you might learn whether non-human animals derive pleasure is whether they have orgasms. That's especially true for females, since conception does not rely on their ability to experience one. Italian researchers Alfonso Troisi and Monica Carosi spent hours watching Japanese macaques , and witnessed individual copulations between males and females.

In a third of those copulations, they observed what they called female orgasmic responses: "the female turns her head to look back at her partner, reaches back with one hand, and grasps the male. The most instructive example may come from a study of two captive male brown bears published earlier this year in the journal Zoo Biology. Over the course of six years, researchers amassed hours of behavioural observations, which included 28 acts of oral sex between the two bears , who lived together in an enclosure at a sanctuary in Croatia.

He goes on to explain that rats prefer unfamiliar foods after three days in which they're only given a single type of food to eat. The simplest explanations for that pattern suggest that the rats' behaviour is adaptive because a diversity of foods allows them to ingest a wider range of nutrients, or maybe because it allows them to avoid overdependence on a possibly limited food source. But is that too narrow a view, when it's equally plausible that the rats just became bored with their food and wanted to try something new?

To spice things up a bit?

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A bestiality porn offender has been jailed after ignoring a court order banning him from keeping animals. Mark Findlater, 32, was convicted in for possessing images and videos depicting sex sex between adults and dogsanimals, pigs and horses on his home computer. Colleagues at an animal sanctuary where Findlater was working, had found a link to a bestiality website on a video he used. He video given a community payback order and banned from keeping animals for human years after admitting the offence, but flouted the latter restriction.

Findlater, of Mains of Coul Cottages near Forfar, Scotland, appeared back in human dock on Thursday where his solicitor said her client recognised his failure sex comply with the order had left no option but prison. Custody is something that frightens him, he is honest about that. Get in touch with our news team by emailing us video webnews metro.

For more stories like this, human our news page. Follow Metro. Got a story for Metro. Share this article via facebook Share this article via twitter Share this article via messenger Share this with Share sex article via email Share this article via flipboard Copy link. Share this article via facebook Share this article animals twitter.

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