In Amboseli, Esau’s moment has arrived. As other males circle, he relies not on force, but skill and restraint -- while younger elephants watch and learn what it takes to mate. Nature is available to ...

Here are 10 animals that have some of the highest levels of testosterone and the impact it has on their behavior and characteristics.

• During courtship, a male and a female elephant will rub their bodies on each other and even wrap trunks. The females tend to run away from the males and he will have to pursue her. This game of cat ...

PESCADERO, Calif. (AP) — Every winter about 10,000 elephant seals make their way to California's Año Nuevo State Park to fight, mate and give birth. The spectacle runs from mid-December through March, ...