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"It can grow another penis within 24 hours..."The world's 9 weirdest penises – including a detachable one that swims off after a mate
Animal penises come in all sorts of shapes and sizes...
This fish lives in complete darkness – and scientists just found out it does something weird...
The two different species of cavefish live on the surface and in complete darkness, offering a rare glimpse into how the brain evolves and adapts to different environments
"To survive the winter it builds itself a life-support bubble. We can assume that the structure is more or less sealed..."
Nick Baker takes an in-depth look at the marsh fritillary's winter survival skills
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"I experienced relaxation of muscles in the limbs, was hardly able to speak or control my facial expression and felt almost like I were going to die”
The flower urchin looks like it’s covered in hundreds of beautiful petals but each one is a set of snapping jaws ready to bite
A giant 'horror movie' plant that can cause painful burns, eye damage and even blindness – with some effects persisting for months or years
You definitely don't want to go anywhere near this highly toxic plant. Here's what to look for and how to deal with it
It looks like a dog, growls like a dog and acts like a dog – but is it actually a dog? It depends on who you ask...
Meet the dingo, an iconic species of Australia
Researchers took moss from the Californian desert – and found something very weird (and tiny) in it
Mosses are known for their durability, able to survive anywhere from the peaks of the Himalayas or the sands of Death Valley, to the unforgiving vastness of space
Vomiting, paralysis, kidney failure, death: This foul-smelling plant is so deadly it was used to execute condemned prisoners in ancient Greece
This common wildflower looks like several other plants but if you confuse them you'll regret it. Discover hemlock and just how poisonous it is
"Dice it any which way and each fragment will in time become a fully functional creature. How, though, is not fully understood..."
Discover one of the bizarrest creatures in the world
"With their killer instinct and feline prowess, big cats are some of the world's most impressive animals." Get to know these magnificent hunters
Learn about species found in the big cat family, including tiger, lion, jaguar and more in our expert guide.
The vampire spider that drinks human blood and has a liking for smelly socks
Too small to bite a human, this arachnid manages to get a taste of the red stuff elsewhere. Nick Baker introduces us to the vampire spider
"It has a sharp beak designed for slicing and hunts in packs that can number thousands. Some even say that if you fell overboard it would tear you to pieces"
These demonic deep-sea creatures hunt in packs of thousands and are equipped with the perfect weapon to severe their prey’s spinal cord.
The 3-metre shark that erupts from the ocean, spinning furiously like a tornado...
These fish-eating predators catch as many prey as possible by spinning while swimming in a burst of speed, sometimes even clearing the water’s surface
A thousand toads mysteriously exploded in 2005 – and the explanation was way stranger than anyone expected
Mega volcanoes, asteroid impacts and 'the great dying' – 5 deadly mass extinctions that changed life on Earth forever
What is a mass extinction – and how many of them have there been? Will Newton takes a look the 'big five' extinction events
This tropical creature lives almost 3 times longer than expected and appears to barely age. Here’s why scientists are so excited
Insects don’t tend to live very long lives, but one tropical butterfly has found a way to stay young.
"Its toxins affect the nerves and heart and it has enough poison to kill 10 grown men"
All you ever needed to know about poison dart frogs, from why they're poisonous to where they live and what they eat
They're one of the weirdest type of animals on the planet, famous for their pouches, but what on Earth are marsupials and why do they have pouches?
Learn all about marsupials in our expert guide, including why they have pouches
Wolves, dragons and devil whales: The strange animal world of Anglo-Saxon England
We examine the clues in Anglo-Saxon literature and language to determine how they regarded different animals.
Could a human outrun a hippo? And what about in water - can a human outswim a hippo?
"They rip into the throats or bellies of their prey and hold the carcass down while stripping off chunks of flesh" 10 deadliest claws on the planet
Have you ever wondered which animal has the deadliest claws? Well, wonder no more...
Mountain lions moved into a tiny Californian preserve. What happened next astounded scientists
A powerful trophic cascade occurred when mountain lions began frequenting a small preserve south of San Francisco
It might be pretty and used in jewellery, but it contains one of nature's deadliest toxins that causes vomiting, convulsions, liver failure and death
BBC Winterwatch will not be returning to our screens in 2027
The BBC has announced the cancellation among other cuts across news, nations, TV and radio content.
