Animal Sex

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.
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Animal Sex: How Porcupines Do It
A North American porcupine
August 2nd, 2014
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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Brown Bears Caught Performing Oral Sex
June 17th, 2014
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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The First Vertebrate Sexual Organs Evolved as an Extra Pair of Legs
placoderm, fish sex
June 10th, 2014
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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Geckos in Space! Lizards Are No Strangers to the Cosmos
Geckos Hand Roscosmos
July 30th, 2014
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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Motherless Male Zebra Finches Prefer Same-Sex Mates
zebra finches
June 17th, 2014
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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Animal Sex: How Jellyfish Do It
a pair of jellyfish mating.
May 29th, 2014
Jellyfish mating involves courtship dances, swamps of reproductive material and buds, or tiny clonal outgrowths.
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Animal Sex: How Elephants Do It
A pair of elephants with one resting his head and trunk on the back of the other.
April 19th, 2014
Despite some human-like characteristics, elephants' mating behaviors are very different from our own.
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Animal Sex: How Koalas Do It
Koala bears sleeping up in the trees.
June 29th, 2014
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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Ant Sperm Bundle Up to Outrace the Competition
Sperm bundles of the desert ant <em>Cataglyphis savignyi</em>.
June 10th, 2014
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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How Corkscrew Vaginas and Female Penises Evolved
Menno Schilthuizen, author of "Nature's Nether Regions" (Viking, 2014), looks at saki monkeys at the Prospect Park Zoo.
May 10th, 2014
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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