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The world's smallest penis will surprise you: "Evolution didn't forget to finish the job. Bigger is only better when bigger helps..."
Which animal has the smallest penis? We investigate...
"While she is doing the needlework, the male brings the threads. Little by little she laces it up to form a cup using dozens of stitches."
The little bird that's a very adept seamstress
It's famous for its white sands, surf – and being the shark bite capital of the world...
Why are there so many shark bites in Volusia County, Florida? Here’s everything you need to know
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It can weigh a whopping 800kg and move at a rapid 40kph, but it's not the only giant out there... 7 biggest bears on the planet
The largest members of the bear family are fascinating for far more than just the size of their paws or the strength of their bite.
“It’s like being electrocuted and set on fire at the same time…” Discover one of the world's most dangerous trees
This tree is considered one of the world’s most venomous plants, and its painful effects can last for years.
It’s as long as a Ford Transit van – and has an elongated, odd-looking torpedo-shaped beak, perfect for grabbing slippery prey...
Meet the charismatic and colourful Indo-Pacific humpback dolphin
"It drops large cones that weigh 40 pounds apiece – more than heavy enough to kill a passer-by..." 8 most dangerous trees on the planet
From tropical terrors to coniferous killers – here are some tree species you might want to avoid the next time you’re walking in the woods.
"The real danger comes when they horrifyingly attach INSIDE your body..."
Leeches are famous for drinking blood – and being used in medicine. But can these slippery little vampires ever be deadly?
Are the any deadly big cats in the USA?
What wild cats roam the US? James Fair investigates
Why do humans grow so slowly compared to other animals?
Most animals mature quickly. Humans take their time. The reasons are complex.
“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
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.
