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It's sleek, black, incredibly beautiful and very fast – and is known as the 'cheetah of the deep sea' despite weighing over a tonne
Learn all about the unmistakable pilot whale, from their diet and size to life in the pod and why, sadly, they're prone to beaching
"Imagine an elephant that stood no taller than your waist and was covered in a coat of fuzzy hair - cute, right?" Meet 10 cutest prehistoric animals ever
Not all animals from prehistory were monsters, some would even have made great pets…
"A bull elephant appeared from the bush. Ambling over to the carcass, the immense creature used his tactile trunk to gently caress the bones of his fallen comrade"
A cheery safari trip takes a solemn turn
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When scientists went to a group of remote South Pacific islands, they weren’t expecting to find so many of these giants
A new study has revealed that giant clams are thriving in American Sāmoa thanks to protections from traditional community management.
He was a ‘wrestler’, went to the pub and starred in a James Bond movie. Oh, and he was a 65-stone grizzly bear
A BBC documentary looks back on the extraordinary life of Hercules, the Scottish grizzly bear
“Fighting tunnel vision, dizziness and an elevated heart rate, I stumbled back down the trail and narrowly avoided passing out.”
Conservation photographer Devon Matthews on adventures with arachnids and tripod mishaps
Can kangaroos walk – or hop – backwards?
When it comes to going backwards kangaroos are somewhat slower...
It can mimic facial expressions like humans and is the smallest of its kind in the world – meet this charismatic creature
What are sun bears? Where do sun bears live? Learn all about this beguiling and elusive bear in Heidi Quine's expert guide
Why don’t humans have tails if so many other vertebrates have them?
Most vertebrates have tails, so why don't we? Here's everything you need to know about why humans have evolved to be tail-free
Researchers extract DNA from 25 Killer whales off the coast of Japan – and make "crucial" new discovery
New research reveals that orcas around the island of Hokkaido can be split into two distinct forms, offering conservationists important information that can help protect the animals.
Can any animals kill sperm whales?
Discover the animals take on the mighty sperm whale?
This parasitic creature penetrates its host with potent venom and injects its eggs – and could be lurking in a pond near you
Discover the fairy wasp, a dastardly winged insect that parasitises beetle eggs in the depths of garden ponds
What is the biggest bear in the world? Clue: it towers overs humans and weighs almost a tonne
There are two contenders for the biggest bear in the world title, says Stuart Blackman, and it's difficult to pick a winner between them.
11 jaw-dropping killer whale moments captured in photos and film that reveal the brutal hunting techniques of the ocean’s top predator
Discover the unstoppable force and awe-inspiring dominance of the ocean’s ultimate hunter.
"It may sound freaky, but it can actually 'see' with its genitals"
Are these the weirdest genitals ever?
They look like ants, they act like ants – but these destructive, house-wrecking little terrors are no ants
“I nearly lost my dive watch and a glove while ‘holding hands’ with an octopus in this way.”
Conservation photojournalist Justin Gilligan on giant spider crabs and holding hands with an octopus
"Death can result very quickly" - Discover the world's 10 most venomous animals
It's not just particular snakes and spiders you have to watch out for! Here are our top ten venomous animals, from surprising sea creatures to primates.
This deadly killer - which looks like it's riding a pale pink magic carpet – likes to paralyse and liquidise its prey
If you're visiting a sandy beach you may like to reflect on something that might be going on below your feet. Lurking behind the veil of wet sand, a killer is on the prowl. A driller-killer, no less. Let me introduce you to the moon snail
It can be up to 5 feet long and hold its breath underwater for an hour – meet one of the ocean’s strangest survivors
Described as “imps of darkness” by naturalist Charles Darwin, marine iguanas are a unique species. Our expert guide by the Galapagos Conservation Trust reveals more about these amazing reptiles.
What can tree rings tell us, apart from a tree's age?
Naturalist and author Amy-Jane Beer sheds light on what tree rings can tell us.
10 astonishing brainless animals that are remarkably clever – proving you don't always need a brain to be smart...
What is cleverness? Do animals need a brain to be clever? Leoma Williams investigates...
Refreezing the Arctic, brightening the clouds so they reflect the sun's rays – the crazy but serious geoengineering ideas that could save our planet
“I once worked at an elevation of more than 5,000m in Bolivia and it was very difficult to breathe, eat and sleep.”
Renato Granieri talks chimps, penguins and high altitudes