She says when male and female insects look different, that is called sexual dimorphism – and this can happen in a variety of ...

Fishing duo Cole & Jay highlight the biological differences between turtle species before the session is interrupted by the capture of a giant snake.

In response to social cues, individual clownfish will switch sexes. Cutting-edge research reveals the neural and genetic ...

When Neanderthals and our species had babies together, the prehistoric pairings tended to follow a distinct pattern: Neanderthal dads and moms who were Homo sapiens — the same as modern humans. Since ...

For the first time, whole-genome analysis shows that the small Cape leopards are a genetically distinct population.

Biologists have long wondered why caribou are the only deer in the world in which females—like males—have antlers. A study of ...

When it comes to intricacy, few animal nests can compete with those constructed by long-tailed tits. This is how they make ...