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.
Read More
Animal Sex: How Barnacles Do It
close-up of barnacles on rock
March 3rd, 2015
In calm waters, barnacle penises are long and slender, allowing them to reach the maximum amount of partners possible. But wave-exposed, intertidal locales favor stouter penises, which are more easily controlled under turbulent conditions.
Read More »
Animal Sex: How Anglerfish Do It
Anglerfish
January 6th, 2015
Anglerfish mating involves biting, tissue fusion and the complete lack of mate choice by females.
Read More »
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.
Read More »
Sex in the Wild: 6 Ways Animals Do It
A North American porcupine
February 14th, 2015
Valentine's Day may inspire people to buy chocolates for their loved ones or treat their sweetheart to a romantic, candlelit dinner, but animals have entirely different courtship behaviors.
Read More »
Animal Sex: How Dung Beetles Do It
Dung Beetles
November 30th, 2014
Dung beetle sex involves short breeding periods, intense competition and, of course, poo.
Read More »
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.
Read More »
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.
Read More »
Animal Sex: How Octopuses Do It
Wild Octopus
February 2nd, 2015
Octopus mating involves shifting body colors, detachable "penises," long-distance mating and sexual cannibalism.
Read More »
How Sex Organs Get Their Start
Python embryo
November 5th, 2014
New research shows how external genitals arose from very different starting places for reptiles and mammals.
Read More »
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.
Read More »