Not all fish play by the same reproductive rules. Evolutionary biology reveals how deception became a successful mating ...

Add Yahoo as a preferred source to see more of our stories on Google. Three-toed sloth mating calls are often described as high-pitched screams or shrill whistles. These calls travel long distances ...

The ocean is home to a vast array of different animals, each with its own traits. These include different forms of mating, such as parasitic mating. Parasitic mating occurs when the male physically ...

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 ...

While a dominant male fish from northern Mexico mates with a female, a small fella bides his time in the offing. Suddenly, the little guy darts in ahead of Mr. Big and plants his seeds on freshly laid ...

The three mating strategies of male western side-blotched lizards are predictable based on the color of their throats: orange, yellow, or blue. Each color is correlated with size, testosterone level, ...

Sloths are some pretty interesting animals. Beyond their reputation for being slow, a host of different traits reveals a lot about their evolution and behaviors. Take for example their mating calls.