If you've seen it in a horror movie, a bug probably did it first. To celebrate Halloween, here's a look at some of nature's ...

A behavioral ecologist explains the reciprocal social relationships vampire bats maintain, in sickness and in health.

During the rut, bull moose turn aggressive, as this Maine man found out when we narrowly escaped injury from a charging bull.

The recent arrival of two captive Amur tigers in Kazakhstan's Ile-Balkhash Nature Reserve is a crucial step in an ambitious plan to return tigers to the country 70 years after the big cats ...

Selected from almost 60,000 entries from 117 countries and territories, the winners in this year's Wildlife Photographer of the Year contest offer a stunning window into the natural world ...

Third-biggest cat on Earth, muscular and low-slung, boasting one heck of a chomp, the jaguar reigns supreme atop the wild Neotropical food web. And while catching a glimpse of this burly beast ...

Baboon Eats Gazelle Alive EPISODE SYNOPSIS It’s extremely graphic and disturbing, but this video of a baboon eating a newborn gazelle in Kenya while it’s still alive shows quite a common ...

Homosexual Giraffes Do What Comes Naturally EPISODE SYNOPSIS At any moment in time, one in every 20 male giraffes can be found amorously necking with another male. Or so says one study into ...

Lions Eat Elephant Alive EPISODE SYNOPSIS This disturbing video of a young elephant calf being eaten alive by lions was filmed in Botswana. Lions do not usually prey on elephants, but an extreme ...