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

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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If Aliens Exist, Would They Have Sex?
illustration of aliens
October 14th, 2015
Aliens might have sex, assuming the benefits outweigh the risks on their home planets. What that sex would look like is an open question. But if animal antics on Earth say anything, extraterrestrial sex would be weird.
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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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#JunkOff: Why Animal Genitals Are Important to Science
weird animal penises, animal facts
September 2nd, 2015
A Twitter hashtag, #JunkOff, illustrates the steamier side of biology — and its importance to understanding evolution.
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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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Animal Sex: How Sea Hares Do It
A spotted sea hare (Aplysia dactylomela) in Bermuda.
October 4th, 2015
Sea hare sex involves hermaphrodites, mating chains and lengthy mating events.
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