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Incredible footage shows moment two grizzly bears collide in Alaskan wilderness
The two male bears were filmed fighting over a female in Denali National Park and Preserve.
From egg to chick: how long does it really take a bird egg to hatch?
Ever wondered how long eggs take to hatch? Stuart Blackman takes a look
Remote cameras catch chimps teaching youngsters how to use tools to hunt
Captured in Senegal, one video appears to show a chimpanzee showing her daughter how to use a stick to extract ants from a nest.
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"Imagine a small chipolata sausage to which some joker has tastelessly attached a mole cricket" 12 weirdest insects on the planet
The insect world is definitely a weird one - and there are some that are even weirder than the others. Discover some of the world's strangest and bizarrest insects
"She may eat parts of her own arms to essentially accelerate her own demise." 8 females with the worst, most horrible, lives ever
In the animal kingdom, it's often females that wield the power - but that doesn't mean they have it easy.
They might look like splodges of bird poop, but these white blotches are actually living animals – and they can’t move
Why do some animals have weird slit-shaped pupils and humans big round ones?
Why some animals have slit-shaped pupils in their eye, while others - like humans - have round
Spiders weave sticky, deadly webs to trap prey, so how do they avoid getting stuck themselves?
Just how spiders avoid getting stuck in their own webs involves complex anti-adhesion mechanisms, says Helen Smith
"It’s responsible for sinking 800 ships and killing 20,000 people…" What are the most dangerous parts of the ocean?
From hazardous seas to venomous creatures, the ocean can be full of threats. But these regions could be the most dangerous on the planet.
A swimming creature is hidden in this video – can you name it in less than 7 seconds?
Can you guess which majestic marine animal appears in the video below?
This deep, dark cave may secretly stretch 20km to the sea – and the 'human fish' hides in its shadows
Vjetrenica Cave in Bosnia and Herzegovina is home to many weird and remarkable animals.
"While she goes off to fetch water, it reveals a dark side to the relationship with its nest mate"
It’s not easy being the younger shoebill sibling…
"It will eat approximately 80% of its body weight every day"
The water vole is the largest of the vole species found in the UK, and can be confused with the similarly-sized brown rat.
Which is the world’s most numerous mammal – apart from humans?
With the human population count now at over 8 billion, we are the winners. But which mammal comes next?
Whales vs dolphins: They might look similar, but how alike are these incredible marine mammals really? Here’s what sets them apart…
What's the difference between a whale and a dolphin? Whale and Dolphin Conservation explain what makes a whale a whale and a dolphin a dolphin.
The 300-million-year-old prehistoric plant that can ‘walk’ and jump – and you may have it growing in your garden
“The wildest continent on our planet.” New Nat Geo TV series showcases never-seen-before species and behaviours
Africa Earth’s Wild Home is the first series in a multi-year franchise
"They have the ability to supercool. They lower the freezing point of fluids in their cells, so that ice crystals don’t form"
Nick Baker takes a look at one of our toughest and fascinating winter insects, the snow flea
Do any animals mate with two partners at once?
Stuart Blackman discusses multiple partners in mating.
This lake in Canada just vanished. And it's not coming back.
The breakup of the Milne Ice Shelf in the far north of Canada has led to the collapse of a unique Arctic ecosystem.
Can spiders really be beautiful? Definitely! Meet the world's prettiest, most stunning spiders, from bright blue tarantulas to vivid peacock spiders
We take a look at the most colourful members of the spider family
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[[Boldie]] Joel Berglund](https://d2rj6cu2ik1biv.cloudfront.net/193c804a-a673-47bd-b09b-11baf4822a17/9ac494a4-627d-4fea-a827-dcf588dd6f96/46bc0904-795c-400c-979b-1cf13d462336/thumbnails/2eb19d6b-e9cb-447e-b83b-142e7285a491.jpeg?appId=f347d34d-c1a6-4a00-b570-b78c2dcb3211&platform=WEB&w=1200&webp=1 "Margaritifera margaritifera[[Boldie]] Joel Berglund")
"It does not become sexually mature until about 15 years old and can live to be 120 years old or more"
The rare freshwater pearl mussel can play a large role in restoring water quality in our rivers
"Its head, thrashing left and right, sports 4 black eyes and 6 furtive, fleshy feelers that suggest the whiskers of a Chinese dragon puppet
In muddy estuaries live secretive worms with special ways of pulling edible morsels into their lairs. Meet the ragworm
It looks pearly-white, is the length of a shipping container – and remarkably can swim backwards…
Learn all about their unique adaptations and social behaviours in this expert guide from Whale and Dolpin Conservation.
