Can dance ever be a matter of life or death? Yes, for a peacock jumping spider, it is. It has to impress its female mate with its dancing—and if she isn't impressed, it could be deadly. Read on to ...

At a singles cocktail party, the ending is often predictable. A female may choose a male from several because he is attractive. But why does she think he is good looking? Scientists, stumped by ...

Why does the peacock have such an elaborate tail? This cumbersome trait significantly decreases the male's chances of survival. It only exists because it confers an advantage to its bearer in the ...

Male mouse pheromones, or sex attractants released in urine, attract female mice and increase the male's chance of mating and producing offspring. In that way, mouse pheromones act much like a ...