The male species is remarkably more colourful than the female in most species, as has been an endless source of wonder for ...

The best and worst of 2025 – featuring devotion in DC, late-night tweeting and the fly that sank a birdie ...

This separation of sexes in plants is called dioecy. One reason why dioecy may evolve is because of the negative effects that ...

The deer had both internal male and female anatomy. "A DEC biologist checked it out and confirmed that it was in fact a true ...

Tracking a single male python through protected wetlands led biologists to one of the largest breeding females captured this year.

In the Himalayan forests, the satyr tragopan performs one of the bird world’s most dramatic courtship displays.

Men and women are both obsessed with women's breasts, but the genders view them differently. Cup size is just one of several ...

Boulenger’s backpack frog uses one of the strangest reproductive strategies in the amphibian world. Females carry fertilized ...

Use precise geolocation data and actively scan device characteristics for identification. This is done to store and access information on a device and to provide personalised ads and content, ad and ...

Rochelle Collins, DO, is a board-certified family medicine physician and assistant clinical professor of family medicine at Quinnipiac University. Discharge from your belly button might be a sign of ...

It may sound freaky, but the Japanese yellow swallowtail butterfly can actually 'see' with its genitals. Twenty years ago, ...