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, ...

If you've ever watched any nature documentary you'll likely know that the animal world is full of wild and impressively complex mating rituals. Great Blue Heron mating habits, for example, involve ...

Sloths are some pretty interesting animals. Beyond their reputation for being slow, a host of different traits reveals a lot ...

Love is complicated enough for humans, but in the animal kingdom, courtship can get downright bizarre as you’re about to see in the videos of the strangest animal mating rituals below. From underwater ...