New evidence boosts the idea that species with males who compete for mates adapt faster to changing circumstances.
They might be a hated household pest, but ants actually live fascinating and complex lives.
An infestation as a chick leads to enlarged nostrils in the beak of Darwin finches, and that affects their mating call.
Tasmanian Devils can be incredibly aggressive during mating season and their biting can have fatal consequences.
Social psychologists have been busy documenting the harmful effects that this brand of chivalry has on women. But are they missing something?
Up to half of insect sex can involve two males but our study suggests it's probably less design and more a case of mistaken identity.
Understanding the sex lives of fungi can help in finding answers about disease control.
The competition to father young is often most intense behind the scenes.
Beneath their beautiful, flashing facade some female fireflies are ruthless predators.
From mistletoebirds, to bush turkeys, to the festively plumaged eclectus parrot, Australian birds can more than hold their own when it comes to embracing the Christmas spirit.
An ancient sexual conflict over mitochondrial inheritance may be responsible for the evolution of the two sexes as we know them.
By exploiting the way yeast cells mate, researchers have figured out a quicker, easier way to identify on- and off-target drug interactions.
Some fish build sandcastles to attract a mate but others just use sneaky tactics.
New research uncovers the role of the primate baculum and may explain why humans don’t have one.
Researchers show that a sexually transmitted disease similar to gonorrhoea could have got rid of promiscuous behaviour in agricultural societies.
Sex roles in nature don't always follow the same script. In fact, some females have genitals that resemble a penis. How can this be? Evolution has the answers.
A study published in JAMA Psychiatry this week sheds light on the influence of psychiatric disorders on relationships and mating.
Research shows that women are especially drawn to gay men in certain contexts.
Researchers have found the first evidence that dinosaurs grew unusual features like crests and horns as a way of attracting a mate.
Researchers believe newly uncovered fossils suggest some dinosaurs had similar courtship practices to modern birds. But can ancient footprints really reveal so much?