Animal Sex: News and Features

From an evolutionary and biological perspective, animals are driven to have sex in order to procreate. But there is a lot more to sexual relations between animals. Animal sex is at least as strange and varied as human sex. A male might copulate with many females. And female animals of many species can be choosy, too. Homosexuality is common. Monogamy is rare. And the animal kingdom is full of swingers. In short, with animals, sex can be wild.

  • How Sex Organs Get Their Start

    How Sex Organs Get Their Start

    November 05, 2014 | Article

    New research shows how external genitals arose from very different starting places for reptiles and mammals.
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  • Animal Sex: How Porcupines Do It

    Animal Sex: How Porcupines Do It

    August 02, 2014 | Article

    Porcupine mating involves short periods of fertility, urinary ejaculation and vicious battles between males. In the end the female controls how things play out, and, yes, she must lay down her quills so a male can safely mount her.
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  • Geckos in Space! Lizards Are No Strangers to the Cosmos

    Geckos in Space! Lizards Are No Strangers to the Cosmos

    July 30, 2014 | Article

    Geckos were research stars in space long before the outpouring of media attention that focused on their mission last week. Before space agencies can begin complicated experiments, scientists need to determine how these tiny lizards adapt to life in space.
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  • Animal Sex: How Koalas Do It

    Animal Sex: How Koalas Do It

    June 29, 2014 | Article

    Koalas may be cute and cuddly, sleeping 18 to 22 hours a day, but they can become vicious when it's time to get down to business. Here's a look at how the marsupials mate.
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  • Brown Bears Caught Performing Oral Sex

    Brown Bears Caught Performing Oral Sex

    June 17, 2014 | Article

    The club of fellatio-loving animals just gained a new member: bears. Scientists have observed a pair of male brown bears in captivity in Croatia that regularly engaged in oral sex over several years.
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  • Motherless Male Zebra Finches Prefer Same-Sex Mates

    Motherless Male Zebra Finches Prefer Same-Sex Mates

    June 17, 2014 | Article

    Male zebra finches prefer to form lifelong pair bonds with other males if they're raised by their dad alone, new research shows. This mate choice is likely the result of males "imprinting" on their fathers, researchers say.
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  • Ant Sperm Bundle Up to Outrace the Competition

    Ant Sperm Bundle Up to Outrace the Competition

    June 10, 2014 | Article

    The sperm of the desert ant Cataglyphis savignyi swim in bundles, a rare example of sperm cooperation. The teamwork boosts the swimming speed of the sperm, potentially providing a reproductive advantage.
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  • The First Vertebrate Sexual Organs Evolved as an Extra Pair of Legs

    The First Vertebrate Sexual Organs Evolved as an Extra Pair of Legs

    June 10, 2014 | Article

    We humans use the euphemism for sex that “we like to get a leg over” but the first jawed vertebrates – the placoderms – they liked to get a leg in.
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  • Animal Sex: How Jellyfish Do It

    Animal Sex: How Jellyfish Do It

    May 29, 2014 | Article

    Jellyfish mating involves courtship dances, swamps of reproductive material and buds, or tiny clonal outgrowths.
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  • How Corkscrew Vaginas and Female Penises Evolved

    How Corkscrew Vaginas and Female Penises Evolved

    May 10, 2014 | Article

    The animal world contains an amazing diversity of genitalia that has been largely unappreciated, even among scientists. Live Science goes to the zoo with author Menno Schilthuizen to talk about the sex lives of ducks, cave insects and humans.
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