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Red squirrel vs grey squirrel: Think you know how they differ? Think again as the differences between these two squirrels will surprise you
We take a look at how the red squirrel differs to its American grey cousin
“If they don’t find a meal within one hour, they might die”: Meet the 10 greediest animals on the planet, who never seem to stop eating
No matter their size, some animals simply need to eat a lot of food in order to survive – here are the greediest animals in the world
This bizarre Galápagos bird hunts giant deep-sea squid at night. How it does it is astonishing
Far away in the Galápagos Islands, a peculiar nocturnal seabird is finally starting to give up its secrets
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Brown rat or water vole: How to tell the difference between these two lookalike-rodents
When all you've seen is a flash of brown fur, it can be hard to know whether it was a water vole or rat. Though the two species tend to live in different habitats, there are areas where they overlap, potentially leading to cases of mistaken identity. So how do you tell rats and water voles apart?
It's as sleek as a torpedo, as long as a bus, and weighs the same as an elephant: Discover the ocean creature that slices through our waters at 35 km/h
Our guide to the minke whale, the UK's most frequently spotted whale
Pound for pound, this little fish has the most savage, brutal bite ever measured – way stronger than a great white
It might be small but it sure is mighty...
The little-known story of war elephants: How ancient civilisations turned gentle giants into deadly weapons
It's not only horses that were used in ancient warfare. Steve Harris recounts the history of war elephants
6 extraordinarily weird animal noses: from tentacles to tubular snouts, here are nature’s most ingenious nasal designs
From elephant trunks to tentacled moles, we explain evolution’s strangest noses
The 10 deadliest dogs on Earth: Discover the world's most ferocious and savage wild canine hunters
Meet the world's deadliest canines who are some of the world's most effective hunters
“We heard movement in the bushes and saw two large eyes. The smell of jaguar got stronger.” Wildlife photographer shares incredible encounter
Wildlife photographer Fernando Faciole on armadillos, tapirs and being stalked by a jaguar
Breathtaking gorilla photos reveal the strength and beauty of these enormous mammals
Stunning images of gorillas – from a yawning silverback to an adorable infant riding on its mother's back.
Deep-sea scientists filmed something astonishing and very rarely seen swimming over the seafloor in Chile
Extraordinary footage of a mother squid carrying her eggs
Watch nail-biting and emotional BBC footage of a pregnant hyena being attacked by a pack of wild dogs – will she survive?
In this first clip from upcoming BBC TV series Kingdom, David Attenborough narrates a tense encounter between a pregnant hyena and a pack of wild dogs
Researchers studied fish from 1,497 lakes in Michigan. What they found is concerning
Since 1945, many of Michigan's lake fish species have reduced in size, new research finds.
How to improve your insect photography: Turn tiny creatures into stunning works of art
Pro photographer Ross Hoddinott explains how he got his best butterfly shot – and shares his top photography tips.
Do slugs freeze in winter?
Some do, but slugs are surprisingly adept at surviving freezing conditions – very low temperatures do not have a particularly negative impact on overall numbers for the following year.
8 craziest, weirdest bird beaks on the planet: Meet the most bizarre beaks in the world – where evolution let its imagination soar
Uncover the secrets behind their extraordinary beaks and what they reveal about their lifestyles.
10 real-life zombies: These deadly brain-hijacking parasites can create suicidal rats, pulsating snails, dancing fish – and can even infect humans
It might sound like a horror film, but did you know that zombie parasites not only infect – they also use mind control to kill their hosts. Aoife Glass takes a look at some the world's most horrific zombie parasites...
Green lights found in 385m-deep sea cave in Japan. They've never been seen before
The animal responsible for the bioluminescence is new to science, say researchers.
Is this very ordinary plant a secret, yet deadly, meat eater?
The thistle that has a taste for meat
“I spent a week in the Great Bear Rainforest with First Nations and it transformed my view of nature”
Indigenous tourism in British Columbia is restoring balance to some of the most spectacular nature on Earth
How is bile extracted from bears?
Behind closed doors, thousands of bears endure brutal conditions as their bile is harvested for profit and traditional remedies.
It climbs like a cat, roars like a lion and wears a white crescent on its chest: Meet the secretive creature you’ve probably never heard of
What are moon bears? Where do moon bears live?
Learn all about the beguiling moon bear in Heidi Quine's expert guide
This monkey has dagger-like teeth and the bite strength of a jaguar. Combined, it's one of the Amazon's most powerful tools
The red-nosed cuxiu uses a combination of force and surgical precision to crack open the forest’s toughest nuts, a new study finds.