Learn how male bonobos use subtle behavioral and reproductive cues to pinpoint the fertile window, even when the usual ...

A study reveals how seabream change sex and why some males invest more sperm, rewriting the hidden biology of these fish.

Male bonobos are able to interpret female fertility cues even when those signals do not reliably indicate ovulation. This ability helps them direct their mating efforts toward times when conception is ...

Discover expert-backed tips to identify male vs. female bearded dragons and learn why sexing matters for proper care and long ...

Perched on a plastic chair overlooking a colony of Nazca boobies in the Galápagos Islands, researcher David Anderson ...

After the huge response to our list of Hottest Actors Over 50, we're turning the spotlight to Hollywood's most glamorous and ...