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"One is like a motorbike while the other is a pushbike…" What's the difference between cold-blooded and warm-blooded animals?
JV Chamary explains all you need to know about thermoregulation and the differences between cold-blooded animals and warm-blooded ones
They're one of the largest animals to have ever lived on Earth – yet somehow they survive on a diet of tiny animals
Despite being some of the largest animals in the ocean (and Earth), whales feast on miniature animals – why?
How this bird changes colour almost overnight without moulting – the truth is truly remarkable
The male chaffinch has a clever trick for making its plumage seem brighter come spring says Nick Baker
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It chases fish until they vomit – then devours their sick
Bubbles the dolphin is a familiar face at Lady Elliot Island in Australia, but a new scientific paper is making him famous for something very unusual: eating fish vomit.
"Once a target is locked, it transitions from a dead standstill into a rapid dive, accelerating dramatically to 60 mph"
Kestrels, a relatively small bird of prey, are on the Amber List of conservation and their numbers are still on the decline
A harvest for the wild: how responsible wild harvesting helps regeneration
Wild harvesting can help to protect landscapes while supporting the communities who depend on it
Strange purring sound heard on Hawaiian reef – and we're not sure what's causing it
Marine researchers are using unsupervised AI algorithms to identify marine animals based on the noises they make. But not all the sounds they pick up can be identified.
Scientists have brought a 170-million-year-old Jurassic forest back to life – and you can hear what it sounded like
It’s impossible to go back in time to the Jurassic, but thanks to a new study you can sit back and listen to what a forest during this period may have sounded like…
"Using a pincer movement to prevent their prey’s escape and increasing their speed to the max, the hunters drove them directly onto the beach"
The Galápagos sea lion is the most inquisitive mammal of the Galápagos Islands. Learn more about this endangered species in our guide by experts from the Galapagos Conservation Trust.
Could you have outrun tyrannosaurus rex? Potentially, say experts
Analysis of a unique set of dinosaur footprints from 66 million years ago offers proof of the speeds the animals might have travelled.
"In a gloriously tragic act of self-sacrifice, she stops eating and dies of starvation before her young hatch".
Mother octopuses never meet their babies, as they stop eating and die of starvation before the young hatch. However, that’s probably a good thing.
It might look like it’s raising its arms in welcome, but if you see this, you should run – this wide-eyed cutie is ready to unleash a deadly bite
The slow loris has large eyes, a big brain, looks incredibly cute, but don't be fooled as it is absolutely deadly and among the few venomous mammals
New species of wild cat discovered in Bolivia’s cloud forest
Leopardus tilcayo is the first wild cat species described by scientists in more than a century
Why do we grow old and die when some animals barely age and others can live forever?
Why do living things age? Does anything ever truly live forever? Evolutionary biologist and BBC Wildlife columnist JV Chamary explains the process of ageing.
"Bites result in grotesque swellings - medical amputations of digits and limbs are not uncommon…" 10 deadliest snakes in Africa
The long-and-short and thick-and-thin of Africa’s deadliest snakes.
Starting with a male and female rabbit on 1 January – how many could you have by New Year’s Eve?
Breeding like rabbits is a popular saying, but just how quickly do they breed? We do the math
Experts looked inside the jaws of T. rex – and discovered something human-like about the ‘king of the dinosaurs’
T. rex is one of the most closely studied dinosaur species – but as it turns out, there’s still a lot to learn.
Scientists just photographed a place that's never been seen by humans before. What the images reveal is shocking
During a survey of the Mar del Plata Canyon off the coast of Argentina, deep-sea researchers found dozens of pieces of human rubbish, including food wrappers, a plastic cup and a rubber boot.
There are just 7 species of sea turtle – Here's where to find them and how to tell them apart
Did you know there are seven different types of sea turtle? Tui De Roy takes an in-depth look at the different turtle species
London’s Natural History Museum has just reopened a “hidden” gallery closed off since World War II
Objects on display include a hand axe found near a woolly mammoth and a replica jaw of a domesticated Palaeolithic dog
How high do birds fly? One amazing species has been recorded at an astonishing 11,300m
How high birds fly depends on the species and whether they're hunting or migrating says Mike Toms.
Why do wagtails wag their tails? Possible reasons behind their constant tail-wagging
Mike Toms answers explains possible theories to why wagtails wag
They look like whiskers, but these are no ordinary whiskers… Here's how seals use them to ‘see’ underwater and track prey
Jon Dunn explains the remarkable ways these seals use their whiskers.
It never grows up, is always smiling and can regrow its heart, brain and legs – meet nature’s real-life Peter Pan, almost extinct in the wild
Increasingly popular as pets thanks to their appearance in the Minecraft computer game, axolotls are Critically Endangered amphibians endemic to Mexico.
