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"He is now in full battle dress – a livery to match his mood – and aggressively defends his little patch"
Did you know bullhead fish can sing? Yes really if love's around ... Nick Baker takes an in-depth look at this fascinating fish
"The newly born pups had just a few seconds to reach the surface and take their first breath, otherwise they would drown"
BBC computer-animated footage reveals one of the deadliest births in the ancient oceans of the Jurassic
Do hibernating animals need to go to the loo?
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It looks like a pyramid, is 200 metres high and is buried deep in the Amazon where few people go
Hidden deep in the Peruvian Amazon, this mysterious 200m-high formation looks like a giant pyramid – but its secrets may go far beyond its unusual shape.
Do fish actually drink water?
Do fish drink? or do they absorb water? Stuart Blackman takes a look
"Its sinister, guttural croak reaches an impressive 140dB, far exceeding the 70dB achieved by even the most ear-splitting of human shouts."
How and why do howler monkeys scream so loud? Ben Garrod investigates
It's as tall as Brad Pitt, weighs 169kg, is up to 10 times stronger than a human and is the master of knuckle-walking
Our guide to one of our closest relatives – the gorilla, including the difference between the two species, why they're endangered and conservation work.
Is there really no such thing as fish?
It's a saying you might be familiar with, particularly if you listen to the popular podcast by the QI Elves, but how true is it? Is there really no such thing as a fish?
Do birds have knees?
Do birds have knees? Why do they look like they are on backwards? Ben Garrod explains
"It grunts and gulps like a hungry pig and has claimed a dozen lives"
Despite their risks, these natural marvels can be a boon for marine life as they stir up the nutrients so there is lots of food for animals
Can fish actually drown?
Can fish drown? What about other species that spend their lives underwater? We explain the science of breathing underwater and what can go wrong
"It seems to be a lively business…" Just how do sharks mate?
Just how do sharks mate? Stuart Blackman explains
Are any animals actually bulletproof?
There are some animals, says Ellen Husain, that seem to be able to deflect bullets...
Why do only small mammals hibernate? Why can't we?
Why don't larger animals hibernate? Steve Harris explains
Scuba diver films group of giant 'swimming heads' in Bali
Ocean sunfish, or mola mola, have no tail fin. Instead, they steer with a thick rudder-like fringe called a clavus, which gives them their unusual appearance.
Lost pilot whales were spotted in the Thames. This is what happened next
Marine mammal experts responded to the unusual sighting and tried to encourage the pod back to the safety of deeper seas.
They have enormous goggly eyes, sticky-out swivelling ears, long grippy fingers – and look like Yoda
All you ever need to know about the tarsier
Beneath the ocean, a giant conveyor belt is slowing down. If it stops, the deadly consequences could be global
The Atlantic Meridional Overturning Circulation may be weakening, which could cause huge problems for the planet
This eye belongs to a feline predator – can you guess which one in less than 10 seconds?
This is a close-up image of an animal eye – can you guess which creature it belongs to?
A forgotten landscape is coming back to life – and it feels like stepping back in time
Kate Bradbury tunes into the sounds of nature at the Knepp Rewilding Project
66 million years ago, the dinosaurs died – but ants thrived. Scientists just figured out why
An analysis of ant genomes has revealed how ants achieved species richness.
The oldest thing on Earth is a massive 4.4 billion years old – and there’s more to it than meets the eye
The Jack Hills in Western Australia are home to ancient zircon crystals that offer remarkable clues about Earth’s early crust, water, and the origins of life.
Striking image of beavers in a Polish city wins 2026 Rewilding Europe award
The award is a special category in the European Wildlife Photographer of the Year competition, organised by the German Society for Nature Photography
Deep-sea scientists discover 57 new species in a canyon nearly twice as deep as the Grand Canyon
This deep-sea expedition explored one of the most biologically dynamic regions in the South Atlantic.
