Add Yahoo as a preferred source to see more of our stories on Google. Photograph of a pair of túngara frogs (Engystomops pustulosus) in amplexus (male grasping onto female). It’s important to remember ...

Humans are far closer to meerkats and beavers for levels of exclusive mating than we are to most of our primate cousins, according to a new University of Cambridge study that includes a table ranking ...

Weizmann Institute researchers find that yeast born to preferred partners are fitter than those from one-night stands, ...

Many of us think of our own species as a monogamous one. We select a mate, and we stick with them, or so we tend to believe. But are modern humans really as monogamous as we assume, and are we any ...

Evolutionary theories of human sexuality have tended to describe people as generally preferring either short or long-term mating strategies. Hence, the idea that human sexuality falls on a continuum ...