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Its 4 to 6 fang-like front teeth deliver the most severe damage – and its snapping jaw reflex can even be triggered after death
Here's why the wolf-fish is named after a canine
'They gorge voraciously on slugs and snails, injecting them with paralysing toxins that break down the tissues, before sucking up their digested remains.'
Despite their stunning display, these insects have a ruthless routine as larvae. Kate Bradbury investigates glow worms
“It burst from the inky water, right beside us. We were very lucky”. Close shave with dangerous, massive creature in Zambian swamp
Wildlife photographer Will Whitford talks elusive pumas and obliging silverbacks
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It can count to six, recognise faces, reproduce without a male, kill prey much larger than itself – and has a nasty, venomous bite
From Komodo dragons to Nile monitors, here's everything you need to know about the monitor lizard genus
“It triggered catastrophic global cooling and was twice the size of the one that killed the dinosaurs.” 6 deadliest, most apocalyptic asteroids to ever hit Earth
We’re not alone in space; swirling above our heads at any one moment are millions of rocks that, with only the slightest nudge, could be sent hurtling onto a collision course with Earth…
"Hot mud, boiling – bubbling – pools where nothing survives, sulphur-stinking vents and eruptions of steam that blast metres into the sky"
Here's everything you didn't know about Iceland's famous and bizarre geysers
It lived alongside mammoths, survived the Ice Age, weighs the same as a tiger – and has a top speed of a whopping 60KPH – Don't get in its way!
Learn all about musk ox, the Arctic bovid that survived the last Ice Age, including where its name comes from, and why they're actually more closely related to sheep and goats than to bison and cattle
"Even craftier males masquerade as an unreceptive female. Brazenly strolling past the dominant male, they boldly service the female in front of her betrothed."
When it comes to mating season, these tentacled giants know how to put on a show
"When threatened it slips into a crevice and inflates its body like a rubber raft. Within seconds, it's twice its original size and wedged in place."
How and why the swell shark can inflate itself to twice its size
Can any animal kill an orca, the ocean’s undisputed apex predator?
No other predator is able to challenge the orca, says Melissa Hobson
Are rays just flattened sharks? No, say the experts at The Shark Trust, there's a bit more to it than that
Uncover the similarities and differences that set sharks and rays apart.
Researchers discover 'devil flower' hidden beneath the forest floor in Thai national park
Thismia daemona spends most of its time beneath the ground feeding on fungi
“Crash. Smash. Slam. My cabin was under siege. A colossal crab the size of a car tyre was pushing against my door"
Sarah was staying on a tiny coral island near Panama when an unexpected visitor arrived at her cabin door
Giant crab seen marching along seafloor. What happened next shocked these scientists
Marine researchers watched open-mouthed as a lithodid crab pulled a brittle star limb from limb and devoured its body.
The world's biggest animal migration is a jaw-dropping aerial spectacle worthy of a place on Africa's Big 6, says Mike Dilger
Every year, hundreds of thousands of bats flock to Zambia to feast on a bounty of fruit
“My mind was completely blown.” This diver was filming fish in Borneo, when suddenly the shoal parted to reveal a breathtaking sight
Sipadan Island in Borneo is famous for its healthy reefs and bustling marine life – as this incredible footage shows.
"A fish the size of a dining table and as heavy as a grizzly bear, yet reports of specimens twice that size exist..." 10 largest river fish on the planet
Rivers and lakes don't seem like the perfect habitat for very large fish – but you'd be surprised...
It looked like a pig and was just 20cm tall – meet the first-ever elephant on the planet, which looked nothing like today's majestic giants
It has human-like, sharp chisel teeth and a powerful bite. Divers are advised to swim away, as making for the surface only encourages an attack…
Here's everything you need to know about the titan triggerfish
These people listened 123 different birdsongs then ranked their attractiveness. Here's what came top (and bottom)
Songs that were complex, high-pitched and relatively quiet ranked highest, while shrill, loud songs fared the worst.
‘Lost’ animal caught in fishing net in Papua New Guinea. It hasn't been seen by scientists for more than 40 years
Missing from scientific records for four decades, the spinach pipefish has been 'rediscovered' thanks to local communities – who knew of its whereabouts all along.
“I screamed before the rest of it came into the screen.” Deep-sea scientists film rare creature deep in Pacific Ocean
The elusive animal was filmed swimming near an underwater mountain off the coast of California
In 1941, a massive WWII ship sank off the coast of Albania. Divers just went down there – and found a rare mammal living among the wreck
This 135m-long wartime shipwreck has become an artificial reef, home to groupers, wrasse, lionfish and critically endangered Mediterranean monk seals.
See the chilling moment this vampire squid turns itself inside out
As if this body inversion manoeuvre wasn't surreal enough, the ‘vampire squid from hell’ also exudes a cloak of bioluminescent mucous from its crimson body to help deter predators.
