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 ...

WARNING: This footage is extremely graphic and may offend sensitive viewers. In March 2013 Kruger National Park section ranger Richard Sowry captured the ugly face of South Africa's poaching ...

It’s no holiday for the gibbons of Thailand. Habitat loss, poaching for traditional medicine and the cruel capture of baby gibbons for both the pet and tourism trade have left all but one ...

‘Pride in Battle’ is the epic story of the rapidly growing Xakanaxa pride as it battles to survive through one of the Okavango’s harshest winters. Twenty-one adults and cubs now make up the ...

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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 ...