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Why do humans grow so slowly compared to other animals?
Most animals mature quickly. Humans take their time. The reasons are complex.
"The real danger comes when they horrifyingly attach inside the body..." Can leeches ever kill you?
Leeches are famous for drinking blood – and being used in medicine. But can these slippery little vampires ever be deadly?
“It was like an elephant’s trunk – 4 times its original size." This deadly sting causes pain, swelling, difficulty breathing and heart issues...
This fish disguises itself on the seabed to trick prey into coming close, then sucks them into its hungry mouth using a strong vacuum
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Can a human outrun a rhino? Just how fast are these giants when they charge?
You don't want to get in the way of these intimidating animals, as they can move faster than you think...
"As it lurks behind the trapdoor, a twitch on the trip wire alerts it that something tasty has just walked past..."
The master secret ambush predator, that spend most of their lives hidden beneath the soil, waiting to strike with lightning speed.
"The toady face is the spider’s backside..." Arachnophobes look away now as here are the 10 weirdest spiders in the world
Check out the weirdest spiders in the world, from the curiously-named 'happy-bum spider' to a fearsome species that eats its sexual partner
Zebu, Zorilla... 8 animals starting with 'z' including some crazy ones and a species that's the last word listed in the English dictionary
How many animals beginning with a 'z' can you name? Here are eight to get you started...
There's an animal in the tropical forests of Borneo that breastfeeds its young for 6.5 years
Orangutans have one of the longest breastfeeding periods among mammals, new study finds.
“Over the next 6 months, it will prey on the defenceless larvae until it’s 100 times its original size.” This undercover carnivore may look harmless – but don’t be fooled
In rare footage captured for the BBC’s Wild Isles, the carnivorous caterpillar uses master trickery to survive.
Researchers went into a 25m-deep tunnel in Greece – and found an unidentified creature clinging to the walls
A new species of cricket has been discovered inside a man-made tunnel on a small island in Greece.
Each year, around 100 of the ocean’s deadliest predators gather off the coast of Australia. Scientists have now worked out why
Orcas are known for their teamwork and close-knit pods, but do they get together in greater numbers?
Heatwaves may be leaving a generation infertile – and ruining sex lives
New research suggests that extreme heat can damage the future fertility of solitary bees
“All subspecies hang on in only 5% of their historical range.” This 5.5 tonne giant is Asia’s largest land animal – but it could face extinction
This magnificent mammal is smaller than its African cousins but it’s still the largest land-based animal in Asia. Can you guess what makes them different? It’s not just the size…
Seahorses were being pulled from Mozambique's ocean at an alarming rate. Then something incredible happened
A community-led initiative to transform poachers into protectors is turning the tide for seahorses in the waters off Mozambique
This venomous pit viper snake has been hiding a secret…
The Himalayan pit viper was first described in 1864, and until recently was believed to be one single, although widespread, species.
This elusive bird can be heard up to 5km away – and the sound it makes is extraordinary
The song of the male bittern – the king of the reedbed – sounds like a foghorn.
It looks just like a twig and flies at night – and now is the time to see it
Meet the extraordinary buff-tip moth – one of nature's greatest mimics.
"The youngest home was around 700 years old while the oldest was possibly 4,000 plus..." 10 weirdest, most extraordinary animal homes on the planet
We take a look at some of the animal kingdom's best builders
"There are more deadly predators than people..." The remote town where 1,000 giant, 600kg killers rule
A remote community in northern Canada plays host to the annual migration of polar bears, attracting wildlife enthusiasts from around the world
"With fewer than 50 remaining, and their habitat in conflict it's literally teetering on the brink of extinction..." Meet Asia's fastest animal
There’s one speed demon that can beat them all to the title of fastest land animal in Asia, but this master of acceleration is also critically endangered and time is running out
The mystery of the White Shark Café: why do great white sharks migrate to this remote stretch of ocean?
For years, nobody knew why great white sharks favour this area so much - until a research vessel followed them there.
"Only one-handed gorilla ever to have been released” gives birth in the wild
A western lowland gorilla orphaned and injured by snares has given birth in the Republic of Congo.
"An attack can be fatal, due to their venom and bacteria..." The 3 deadliest, most lethal lizards the planet
Lizards are armed with venom, muscle and a deadly bite. Meet some of the world’s most dangerous reptilian predators
A carnivore has moved into Florida's Everglades – and it's threatening native crocodiles and alligators
The invasive spectacled caiman could be hampering efforts to restore the Everglades ecosystem, according to a recent review.
