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.

  • Photos: Bizarre Sex Lives of Hermaphrodite Sea Slugs

    Photos: Bizarre Sex Lives of Hermaphrodite Sea Slugs

    November 12, 2013 | Image Album

    A simultaneous hermaphrodite, the slug has both male and female reproductive organs that it uses simultaneously during sex. The male organ is a two-pronged penis equipped with spines.
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  • Animal Sex: How Penguins Do It

    Animal Sex: How Penguins Do It

    November 01, 2013 | Article

    Though they may look different, penguin mating behaviors are surprisingly similar to other birds. Even so, each of the 18 penguin species has its own little mating quirks, with some doing a look-see of the male's bachelor pad before shacking up.
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  • Why Marsupials 'Mate Themselves to Death': Better Sperm

    Why Marsupials 'Mate Themselves to Death': Better Sperm

    October 07, 2013 | Article

    Live fast, die young. Males of some insect-eating marsupials survive less than a year before mating until they die. They follow this strategy to increase the number of offspring they can sire, a study shows.
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  • Not in the Mood: Storms Quell Insects' Appetite for Sex

    Not in the Mood: Storms Quell Insects' Appetite for Sex

    October 02, 2013 | Article

    For insects like aphids, a raindrop on their head is like a refrigerator falling on a human, so it behooves them to detect stormy weather and avoid such naughty acts.
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  • Animal Sex: How Kangaroos Do It

    Animal Sex: How Kangaroos Do It

    October 02, 2013 | Article

    Unlike many other animals, kangaroos have sex for a long time — up to 50 minutes. And the female has three vaginas, two of which are inseminated by the male's double-headed penis.
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  • Animal Sex: How Seahorses Do It

    Animal Sex: How Seahorses Do It

    August 27, 2013 | Article

    Seahorses have a sex role reversal, where males get pregnant instead of females. But how do they actually get busy and get pregnant in the first place?
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  • Why Insects Have Gay Sex

    Why Insects Have Gay Sex

    August 15, 2013 | Article

    Homosexuality has been found in a wide range of animals, but it is not well understood in the insect world. A recent review of insect homosexuality shows that, for the most part, it occurs as a mistake.
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  • Animal Sex: How Birds Do It

    Animal Sex: How Birds Do It

    July 25, 2013 | Article

    Sure, birds can fly, but how do they have sex? Can they do it in the air? And where do they keep their reproductive organs? For humans to understand bird sex, they must first put all thoughts of mammalian sex organs out of their heads.
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  • Animal Sex: How Blue Whales Do It

    Animal Sex: How Blue Whales Do It

    July 24, 2013 | Article

    Scientists have never documented blue whales mating, but they know there is a dating period where a male follows a female for weeks on end. And sex is not a forgone conclusion for the couple, it seems.
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  • Animal Sex: How Ants Do It

    Animal Sex: How Ants Do It

    June 26, 2013 | Article

    Females use one shot of sperm to fertilize their eggs for the rest of their lives.
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