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.
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Latest Articles

Animal Sex: How Tarantulas Do It
Mexican fire leg tarantulas mating
April 2nd, 2016
Tarantula mating involves sperm webs, courtship dances, and fang clasping. And sometimes sexual cannibalism.
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Spider Shows Off His Big Paddle to Woo Mates
paddle oar
January 22nd, 2016
A new spider species wiggles its enormous paddle appendage in order to woo mates, research reveals.
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Animal Sex: How Manatees Do It
A manatee swims in the springs of Crystal River, Florida.
December 20th, 2015
Manatee sex involves rendezvous points, large mating herds and aggressive shoving.
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Animal Sex: How Love Dart–Shooting Snails Do It
two land snails ready to mate
February 13th, 2016
This Valentine's Day, mischievous Cupid will be fluttering about with bow in hand, seeking out mortal hearts to pierce with his love-tinged arrows. But the winged god isn't the only one known for this behavior. Land snails also shoot love darts.
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Animal Sex: How Santa's Reindeer Do It
Reindeer in the snow in Scandinavia.
December 24th, 2015
In the months preceding Christmas, Santa's sleigh-pulling ungulates are engaged in a very different activity — mating. Reindeer sex involves herding, defending harems and ignoring lovers.
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Animal Sex: How Giraffes Do It
two giraffes touching lips
November 14th, 2015
Giraffe sex involves cocktail parties, statuelike stances, urination and instantaneous ejaculation.
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Why Some Species Have More Females Than Males
green lizard
October 7th, 2015
Scientists have figured out why some species have more females than males and others have more males than females. Turns out, sex chromosomes are the culprits.
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Animal Sex: How Galápagos Tortoises Do It
A giant saddleback tortoise on the Galapagos island of Espanola.
February 8th, 2016
Galápagos tortoise mating involves neck competitions, harassment and lengthy sperm storage.
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Holiday Horrors Unwrapped: 5 Weird Gifts in the Animal Kingdom
December 23rd, 2015
This year, when your family gathers around the tree on Christmas morning, be glad you aren't a cricket. The best gifts they ever get are gelatinous balls of protein. Here are five of the strangest, and most horrifying, presents exchanged by animals.
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Howler Monkeys with Deeper Calls Have Smaller Balls
hooting male howler monkeys
October 22nd, 2015
It's a tough trade-off for male howler monkeys: a deeper voice, or more sperm?
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