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This tooth-filled mouth belongs to a lethal predator – can you guess which one in less than 15 seconds?
This is a close-up image of a rare animal – can you guess which one?
Researchers looked inside an Indian well – and found a colourless creature hidden in the darkness
A new species of subterranean earthworm eel has been found living beneath the ground in the Indian state of Bihar.
"Once they near emergence, the female's thin skin bulges and pulsates with the struggles of the impatient offspring within…"
Discover the Surinam toad, a weird South American frog whose young erupt from the mother’s back
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“In the blink of an eye, 6 of them hurtled towards me. Out of nowhere 1 landed on a branch just 5m away. I tried to back away, but I was easy prey…”
Conservationist Manuel was in the canopy of a Columbian cloudforest when six huge woolly monkeys came hurtling towards him
Scientists X-rayed ancient penguin bones from remote Antarctic island. Here’s why
Antarctica wasn’t always the freezing and ice-capped remote land we know today…
"Some weigh up to a massive 300kg and can grow to be 1.3m long…" Where do giant tortoises live and why on Earth are they so big?
Nick Baker explains how giant tortoises became - well - giant
"A sting from one of these deadly creatures can kill a human in a matter of hours…" 10 most dangerous, deadliest animals in the Indian Ocean
From tiny stinging jellies to huge predatory sharks, these are some of the most dangerous animals in the Indian Ocean
Do cheetahs kill and eat people?
Cheetah attacks on humans are few and far between, but the risk of a fatal encounter can never be ruled out, writes Ryan Keane.
There's a strange spinning island in Argentina that's a perfect circle – and scientists know why
Approximately 120 metres wide, the floating island of El Ojo sits in Paraná Delta in the Province of Buenos Aires.
“You’re looking at one of the wildest landscapes on Earth and watching a species that almost nobody has ever studied.“
Scientists set off into the remote Patagonian Andes to study this rare, ‘forgotten’ rodent.
Cheetah vs leopard: what's the difference between these two stunning, beautifully spotted cats?
Cheetahs and leopards might look similar, but they are more different than you may think, say the experts at Born Free
It spans over 1 million acres, contains rare creatures and is the only place on Earth where two watery, deadly apex predators clash
Everglades National Park, in the US state of Florida, is the largest subtropical wilderness in North America
Polar bear destroys almost entire colony of seabird nests in Alaska. This is why it did it
The feeding behaviour is on the rise along the state’s Arctic coast, driven by climate change.
It weighed more than 2 tonnes and holds the record for the largest bird nest on the planet…
This bird of prey is a master builder, crafting massive stick nests, called aeries, that they return to and expand year after year.
14 incredible photos of bears enjoying the water –whether it's swimming, fishing or just cooling off – in some of the world's wildest places…
From fishing in icy streams to cooling off in forest ponds, bears rely on water for food, travel and play – as this set of spectacular images proves.
Is spider silk - pound for pound - really as strong as steel?
Just how strong is spider silk? Richard Jones takes a look
Why can only big cats roar and not purr?
What makes lions, tigers, leopards and jaguars different from other cats? Why can they roar while every other cat can only purr? Read on to find out!
These birds have never seen rattlesnakes before. Here's what happened when the two of them met
Red-winged blackbirds differentiate between venomous and non-venomous snakes when defending their nests, even if they've never come across the species before, according to a new study.
"It sounds like the two-tone horn of a fast train approaching a station. Unfathomably, females find the noise attractive…"
Just which bird has the loudest call? And how do they produce such a peace-shattering sound?
Should we feed bread to ducks?
Should you feed bread to birds? Stuart Blackman takes a look at the evidence
This coral reef gets bombed every 62 minutes. And it’s changing the way the ocean sounds
Researchers studied the frequency and impacts of bomb fishing, an illegal fishing practice, in the Spermonde Archipelago
"It causes a pearl’s surface to reflect light while giving it a translucent lustre. This pearlescent quality is the pearl's most beautiful feature…"
From what they're made of and how they form to what give pearls their colour, here is everything you need to know about beautiful and sought after, natural pearls
"A female that's around 8cm can produce 1 million larvae, while larger individuals can produce as many as 2 million larvae in a single event"
Also known as the European flat oyster, this humble mollusc used to be a vital aspect of London's food trade and is deemed to be an ecosystem engineer. Learn more in our expert guide from the Zoological Society of London (ZSL).
"Their most obvious function is for digging, used like bulldozer buckets to shift and shovel the mud into shape and create their home…"
Nick Baker takes a look at the life of a mud scud?
