Different species often form due to geographic barriers such as mountain ranges or rivers, which separate populations of the same species until they have become so different that they can no longer ...

The ocean is home to a vast array of different animals, each with its own traits. These include different forms of mating, ...

Scientists have documented same-sex behavior in many animals. Learn what it means, how it varies, and why human labels can mislead.

Finding a partner and sticking with them for life isn’t all that common in the animal world, but a few species really commit. Scientists have found lifelong bonds among creatures in trees, rivers, ...

Sloths have a very unusual mating call, but for a very good reason. Read here to learn about sloths mating calls, and ...

Animals may not celebrate Valentine’s Day, but courtship rituals, pair bonding and fierce competition shape love in the wild.

Peculiar courting rituals are a common thread in the animal kingdom. Some animals go to extreme measures to secure a mate and survive. Other species forgo the mating process and instead become meals.