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Female chimps are more concerned with having sex with many different males than finding the strongest mate, according to researchers. The new study suggests that female chimps keep quiet during sex so ...

Earth's creatures outwardly display an astonishing diversity of genitalia and mating behavior, but the intricate details of how genitalia interact during copulation has remained largely mysterious. In ...

Sexual conflict has been shown to shape many behaviors in the reproductive context, such as the duration of copulation, across a broad taxonomic range. In spiders, copulation duration is one of the ...

When no pseudo-copulation occurred between the dominant and subordinate males, the subordinate male was killed by the sustained aggression of the dominant in half of the animal pairs observed. Here ...

Stephen has degrees in science (Physics major) and arts (English Literature and the History and Philosophy of Science), as well as a Graduate Diploma in Science Communication. Stephen has degrees in ...

The planet’s first act of sex happened 385 million years ago between two prehistoric fish called pacoderms, according to new research by Australian paleontologist John Long published in the journal ...

Scientists from Flinders University in Australia say they have identified the first example of penetrative sex in evolution. And wow, was it ever weird. Illustration: Brian Choo/Flinders University.

John Long receives funding from The Australian Research Council and Flinders University. The intimate act of copulation is old – very old. In fact, it first evolved in ancient armoured placoderm ...

Using CT scans, researchers visualize the internal dynamics of sexual intercourse in marine mammals. The research sheds light on evolutionary forces and has practical applications for conservation ...