The mandrill is one of the most sexually dimorphic mammals in the world due to sexual selection and mating competition. While the male can weigh up to 119 pounds, the average adult female weighs ...

When faced with a potential threat, mice often freeze in place. Moreover, when two animals are together, they typically freeze at the same time, matching each other's periods of immobility. In a new ...

WASHINGTON, D.C. (KAKE) – U.S. Senator Roger Marshall (R-Kansas) introduced the “Defining Male and Female Act of 2025” on Wednesday. In a press release, Marshall says the bill codifies ...

Then again, apparently adding alcohol to their food increases the production of sex pheromones in male fruit flies, according ...

The male European fiddler crab attracts his mate by performing a courtship dance. New research published in the Journal of ...

Imagine a world where mothers don’t need fathers to create life—a world where females alone carry the spark of the next ...

Rockstar Games introduces Lucia, the first female protagonist in Grand Theft Auto 6, generating mixed reactions. While many laud the move for diversity, some male players express discomfort.

It is the latest move overseen by Sebastian Coe - as president of the governing body - to address the gender eligibility issue, two years after banning anyone assigned male at birth from female ...

Basketball great LeBron James has become the first professional male athlete to have his likeness ... Last year, nine female athlete Barbies, including tennis star Venus Williams, were introduced.

World Athletics has approved the introduction of cheek swabbing to determine if an athlete is eligible to compete as a female ... a crucial role in determining male sex characteristics.

World Athletics plans to introduce biological pre-clearance tests for track and field athletes before they can compete in the female category, the sport’s governing body announced Tuesday.

That includes during our hunter-gatherer days, which account for some 95% of human evolutionary history. The idea of "man the ...