Males engage in a two-week-long sex marathon with as many females as they can find. Each frenzied encounter can last up to 14 ...

In the Himalayan forests, the satyr tragopan performs one of the bird world’s most dramatic courtship displays.

These three bird courtship displays are so bold, precise and theatrical that they make human romance look a little ...

Homo sapiens of the American persuasion plan to spend $26 billion on Valentine’s Day gifts this year, an outpouring of resources signaling love, devotion, desire and financial fitness. While the form ...

A grey bird with a long neck and long legs bends over backward in a mating dance on a yellow-grassy plain. On Valentine's Day, lovers who are eager to woo their partners show their affection with ...

Some animals reproduce only once before dying. This life strategy, called semelparity, sees organisms channel all energy into ...

In 1989, paleontologist Darren Tanke suggested that similar breaks were the result of mating as one dinosaur mounted the ...

Learn more about mammal monogamy rates, which support the theory that the primary mating pattern in Homo sapiens is monogamy. Many of us think of our own species as a monogamous one. We select a mate, ...