Hercules the bear was a trained grizzly bear from Scotland. He became famous for his wrestling act with Andy Robin and later ...

“Fighting tunnel vision, dizziness and an elevated heart rate, I stumbled back down the trail and narrowly avoided passing ...

Yes and no – and sort of, says Ellen Husain. Ground-dwelling kangaroos have a specialised pentapedal' locomotion, in which ...

New research reveals that orcas around the island of Hokkaido can be split into two distinct forms, offering conservationists ...

However, size alone doesn't make sperm whales immune to becoming prey themselves. Their main foes are killer whales, while ...

I’ve learned how to befriend an octopus. I keep still, present my hand and pretend not to look directly at it. It eventually ...

It may sound freaky, but the Japanese yellow swallowtail butterfly can actually 'see' with its genitals. Twenty years ago, ...

With roughly 45 teeth, each up to 10cm long and 4cm wide, orcas are perfectly engineered for ripping and tearing prey. These ...

If you're visiting a sandy beach you may like to reflect on something that might be going on below your feet. Lurking behind ...

Less ice means that less of the sun’s energy is reflected back into space. Instead, it is absorbed by the dark surface of the ...

Marine iguanas were described as “imps of darkness” by naturalist Charles Darwin. Learn more in our expert guide by the ...

“I once worked at an elevation of more than 5,000m in Bolivia and it was very difficult to breathe, eat and sleep.” Initially ...