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This underwater robot was filming 30m deep off the Californian coast, when an “unexpected visitor” showed up
A cormorant surprised ocean researchers when it photobombed their underwater survey.
Watch the gut-wrenching, heart-stopping moment a prairie dog defending his pups from being devoured by a deadly and hungry snake - will they survive?
BBC footage captures the moment a brave black-tailed prairie dog attempts to drive away a large bullsnake
10 most beautiful wild dogs on the planet, from the supermodel-legged wolf to the tiny blonde desert fox
Magnificent and handsome four-legged beasts from across the globe
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It's the size of a French bulldog, looks like a deer crossed with a rabbit and can run at speeds of 37mph
The Patagonian mara is a long-legged rodent built for speed, survival and social living on the open plains of South America
It's the size of a Labrador, looks like a bear crossed with a pet cat, chuckles like a human – and smells like popcorn
Animals don't come much more peculiar than this tree-dwelling mammal from the rainforests of Southeast Asia.
"For one agonising moment, we huddled and dangled at their mercy…"
White rhinos have an exceptional sense of smell. Wesley Bell put it to the test...
It's the same size as Houston and just teeming with deadly American alligators and highly venomous snakes
The Okefenokee Swamp is thriving with plants and wildlife
It's a cat – but it's a strange cat with long legs and a tiny head. It can leap 10 feet high, go off like a rocket at 50mph and has the weirdest ears ever
The caracal is probably the world's best-looking and most enigmatic cat. Discover this fascinating creature of contradictions
10 most dangerous, deadliest animals to humans: Discover nature’s top – most lethal – killers
Think you might know what the 10 deadliest animals might be? Our expert guide rounds up the animals causing the most number of human deaths per year – and some of them might just surprise you.
“As it touches the seafloor, it kills whatever living thing it contacts by encasing it in a tomb of ice…” 10 mind-bending, terrifying ocean phenomena
These weird ocean phenomena are out of this world
“It carved a crater twice the size of Rhode Island and as deep as the Grand Canyon." This 35-million-year-old asteroid impact wrecked the United States
It created a crater three times larger than any other US crater and the sixth largest known on Earth…
How on Earth do whales manage to breastfeed underwater?
Do whales produce milk? Do whales have nipples? How does it all work underwater? Read on to find out all the whale nursing facts you've been wondering about.
10 most beautiful wild cats on the planet
Hidden beauties of the wild: small cats, big charm
An American town woke up one day and mysteriously found itself on the opposite side of the Mississippi River to where it had been. We now know why...
Rivers can change direction, leaving behind abandoned channels
4 smartest, most intelligent dolphins and whales in the ocean
Whales and dolphins are continuously surprising experts with their intelligence
It makes you hallucinate tiny, pint-sized people – and scientists have no idea why
Relatively new to science, L. asiatica has researchers scratching their heads.
“Unbelievable thing to see”: Drone captures never-seen-before footage of penguin chicks plunging 50 feet into Antarctic Ocean
The dramatic footage was filmed for National Geographic's series Secret Lives of Penguins.
"I was caught between a muscular puma and an enormous, agitated serpent. This was far from ideal."
Something stops Wara the puma in her tracks while out on a walk with volunteer matthew.
"Once a target is spotted, they plunge into a spectacular high-speed dive at up to 143mph, seizing their victim in enormous talons and killing on impact"
The martial eagle is a formidable hunter
It’s almost as big as Manhattan, contains trees more than 1,300 years old and is visible from space. Now it hides a ticking time bomb
The logjams in the delta of Canada's Mackenzie River are vital for wildlife and the environment
"They measured 3.18 metres and weighed a whopping 209kg and belonged to the 'Kilimanjaro Bull’"
An elephant’s tusks aren’t like a rhino’s horn, they can’t just grow back…
"It’s only 19 hectares in size but hosts a tightly packed crowd of 81,000." 10 biggest bird colonies in the world
Birds travel long distances to get to their favourite breeding grounds, no matter how cramped they may be
It bakes its eggs in an oven and will probably abandon its babies, but is stubbornly faithful to its partner
The rufous hornero has fascinating and brutal habits
"We were in a small boat in the deadly, croc-infested Zambezi River, just metres from the edge of Victoria Falls. Then the boat's engine spluttered and cut out...”
As the Zambezi approaches the famous 100m drop-off, it constricts from three miles into one mile, and picks up speed and sass. Suddenly, we found ourselves funnelled through ever tighter channels and increasingly challenging rapids
