While it’s a known fact that female guppies prefer orange and unusual patterns on their male partners, the team found that ...

When the top spotty fish in a tank disappears, the runner-up turns aggressive within minutes, rushing and nipping rivals ...

At the very start of Fire Emblem Warriors: Three Hopes, you'll be asked to choose whether you want Byleth to take a male or female form.

These gorgeous pet fish aren’t too demanding - making them perfect for those who don’t have time to fuss over food and water ...

If you've got a manual on USB ports or have watched any kind of video, you may have heard them referred to as Male or Female ports. Here's what that means.

Biological sex is not as simple as male or female Defining sex as a binary excludes many biological realities, scientists say ...

Trending News: Male and female king cobras, despite their similarities, have distinct differences in size, color, behavior, and reproductive roles. Males grow larger ...

Nassau County Executive Bruce Blakeman -- who banned transgender athletes from competing in girls sports on his turf -- lauded President Trump's executive order defining sex as "only male and female." ...

Facultative sex allows some animals to reproduce with or without a partner. So why can't humans do it? by Lucinda Aulsebrook, The Conversation ...

This article will explore how female stalkers differ from male stalkers, shedding light on this often misunderstood issue.

Female mollies can also store sperm from male fish for future use — so even if you bring home a group of female mollies, there's a good chance that one or more of them are already pregnant.