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“It’s alien in every sense of the word.” In sulphuric caves too deadly for humans, living snot-like slime drips from the ceilings
In a clip from the BBC’s Wonders of the Solar System, Brian Cox visits an ‘alien’ within a cave that’s a death trap for humans
"Symptoms rapidly worsen, including nausea, vomiting and stomach pain, and can lead to death." 9 most dangerous, deadliest tick diseases for humans
Like human hitchhikers, ticks need to find the best place to get a lift. But if you pick up a tick, it could drink your blood and pass on a very unpleasant disease.
Record-breaking runs, swimming successes and theatrical tussles: These 13 beautiful photos reveal the leopard’s astonishing athletic abilities
The enigmatic leopard is a master of stealth – but photographers are occasionally able to capture their striking beauty in the wild
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The official who tried to reason with deadly crocodiles – what happened next became legendary…
The day a Chinese official put crocodiles on trial
"The bold green, yellow and black markings make a mesmerising mosaic…" 10 most beautiful, dazzling snakes on the planet
Snakes get a bad rep, but these top 10 species prove they are some of the most enchanting animals in the world
“It slowly disappears under a writhing mass of earth and ants and is sliced up.” Ravenous insects devour prey alive in BBC clip
Driver ants attack everything unfortunate enough to wind up in their path – and this unlucky slug is in for a tough day.
Scientists have built a tiny diving suit for ‘cyborg cockroaches’. And it could save human lives
The invention comes after a decade of research into cyborg insects – which could be used in search and rescue missions
A 6,190m giant rises from the Alaskan wilderness. It's the highest mountain in North America. Here what lives there
Spanning six million acres of rugged wilderness, Denali National Park is home to North America’s highest peak – and a cast of incredible, cold-loving creatures.
"As with humans, their greatest enemies are the same species. At the frontier they detect friend or foe by smell and interlopers are repulsed…"
Ants are often a much-overlooked group of insects, but they have fascinating behaviours and adaptations, as entomologist Richard Jones explains.
It has no brain or blood – but this five-armed creature is a formidable predator
The common starfish has two stomachs – and it forces one of them out of its mouth to consume prey.
"This means that those returning in the spring will be the ‘great-great-grandchildren’ of those that left the previous autumn…"
Mike Unwin explores just how far this remarkable butterfly species travels when migrating
"What no one knew at the time was that many of those committed couples were, to put it anthropomorphically, lesbians…"
When males are scarce, the female Laysan albatrosses of Hawaii will partner up to raise young, as zoologist and broadcaster Lucy Cooke explains.
It’s bigger than your thumb, has immense jaws and is nicknamed the flying bulldog – Meet the largest bee on the planet
Discover the giant bee of Indonesia.
"They will use this claw to rip open the soft bellies of humans to devastating effect..." 6 deadliest, most dangerous jungles on the planet
In the world’s jungles, danger comes in many forms – deadly predators, fatal disease, hazardous terrain, extreme isolation, and conflict with hostile humans.
"It has a reputation for cunning, opportunism and haunting twilight calls..." Does this wild dog really deserve its bad reputation?
All you ever needed to know about the jackal
"This 5kg bandit-masked carnivore is North America's most numerous mammal and often regarded as the ultimate urban pest"
Learn all about the raccoon, from size and diet to how they became slick city dwellers, including one enterprising individual who scaled a 25-storey Minnesota high-rise
‘Large potential wildlife moving near the weather station.’ Polar bear-detection system successfully clocks family in Canada’s High Arctic
As the climate changes, the chances of polar bears and people interacting are increasing. A new AI radar detection system, known as Bear-dar, aims to reduce surprise encounters, helping to keep both polar bears and people safe.
"It's like walking over flaming charcoal with a three-inch nail embedded in your heel.” The wasps and bees with the most painful, savage stings on the planet
Not all stings are created equal – explore the bees and wasps whose powerful venoms produce some of the most intense pain ever recorded
Climate scientist whose work shaped modern climate science says US government report got his research 'completely wrong'
An American climate scientist has strongly criticised a US Department of Energy (DOE) report on the impacts of climate change in the US.
This adorable animal has a bizarre body part – and a hidden camera just caught it showing it off
Striped possums have a shockingly long tongue to help them scoop insects out of their hiding places.
It's the length of Africa, home to more than 2,000 marine species—many found nowhere else on Earth—and one of the world's largest underwater forests
The Great Southern Reef might be less known than the Great Barrier Reef but it’s similarly spectacular
“It seizes the victim with large spines, impaling and immobilising the prey…” This ultimate hunter might look like a spider, but don’t be fooled…
In this clip from BBC Earth’s Expedition Guyana, George McGavin explores an extreme habitat underneath a fallen, hollowed-out tree in a Guyana rainforest, and comes across something interesting…
Which country has the longest coastline? Clue – there's a colossal 265,523km of it...
Which country has the longest coastline? Well, it depends on what you include, says Stuart Blackman
"It's the size of a house cat, with all the charisma of rusty-red teddy bear..."
All you need to know about the charismatic red panda
