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The Amazon's horrific candirú fish that swims up the urethra: fact or fiction?

Amazon locals are afraid to pee while swimming in the river due to a tiny fish. But is there any truth to these nightmarish legends?

Meet the anglerfish: the most famous 'deep sea monster'

It's the fish that fishes other fish -- and it's pretty amazing at the job!

How dogs use "puppy eyes" to manipulate you -- and it works

This is manipulation I can get behind.

Whale Sharks: The Gentle Giants of the Ocean

These magnificent creatures pose no threat to humans -- but humans pose big threats to them.

Saltwater Crocodiles: the world's oldest and largest reptile

Truly fearsome beasts!

What are fisher cats, the most misleadingly-named animals out there?

One of the world's lesser-known beasts, fisher cats are starting to make their presence felt in cities.

What do frogs eat and other froggy facts

At their adult stage, frogs are generally carnivorous, but there are exceptions.

What are komodo dragons, the largest lizards in the world?

These fearsome predators, encased in bony armor, are threatened with extinction.

Why do cats sleep all day?

It's not uncommon for cats to sleep up to 17 hours a day. What do you think they're dreaming about?

The wolf cat -- how this bizarre, adorable cat came to be

It's a relatively new type of breed -- and a pretty unusual one as well.

Why your dog likes to eat grass

Dogs aren’t true carnivores, but they aren’t exactly omnivores either. The reason why so many dogs like to nibble grass may be due to instinct.

What's the difference between a raven and a crow, according to experts

Although very similar, there are subtle differences that we can use to tell them apart.

Why cats purr -- and why there's more to purring than you think

Scientists are still learning new things about why your furry pet purrs but cats are confusing them with their adorable mind tricks.

The fascinating (and very real) story of the dire wolf

They shared a common ancestor with grey wolves over 5 million years ago.

Naked mole-rats: the creatures that defy biology

Don't let their comical appearance fool you. These are one of the most capable and resilient creatures in the world.

Why do dogs wag their tails? Your pet is trying to communicate

Most people think dogs wag their tails when they're happy. But that's not entirely true at all.

Why do flamingoes stand on one leg?

They are among nature’s most beautiful birds — and also one of the strangest.

12 penguin facts you need to know

World Penguin Day is upon us. Pioneered at McMurdo Station — an American Research center on Ross Island in Antarctica — to raise awareness and inform the public more about the plights of flightless birds, it has been embraced by environmentalists all over the globe. Scientists noticed that April 25 was the specific day on […]

The sheepshead fish: fish will give you dental nightmares

The amazing sheepshead fish has human-like teeth.

The oldest animal (that we know of) -- and it's not what you think

We're still not sure what the oldest animal on Earth is, but here are some potential contenders.

Small but sneaky. These are the world's 10 smallest mammals

They may be small, but they've got some amazing skills.

Dolphins have personality traits very similar to humans, study finds

We knew they were smart, but they're surprisingly similar to us.

16 Dog facts we've only learned in the past few years

Man's best friend has been with us for millennia, but we're still learning new things.

7 brainy reasons why crows and ravens are the smartest birds in the world

Who you calling bird brain?

Dogs dream too. But what about?

Dogs dream in much in the same way we do, based on their daily experiences.

Meet the goliath bullfrog: the largest living frog on Earth

These beefy amphibians are so strong, they can hurl 2 kg rocks to build their own ponds.

What is catnip why do felines go crazy over it

Oils found in catnip makes felines enter a frenzy of delight. No worries, it's non-addictive and harmless.

The uneasy story of how the Great Auk went extinct

A burning reminder of how mankind can drive species to extinction.

Humans aren't the only animals that get drunk (or worse): here are a few others

All life likes to party.

Pollination 101: the basics on what it is and why it matters

What's all the buzz?

The hard difference between horns and antlers

Here’s to some truly impressive headgear!

The saber-toothed cat: the most memorable extinct megafauna

There's more to these amazing prehistoric animals than their long canine teeth.

Why do dogs have whiskers?

Whiskers allow dogs to "see" things that are literally under their noses.

Like a pair of lovebirds: how birds court and mate

The inner workings of a bird's sex life.

The slimy difference between toads and frogs

Can you tell the difference between a frog and a toad?

Like a moth to the flame: why moths are attracted to light

Wonder why your room is full of moths in the summer?

What's the difference between birds and mammals

The differences are too many to say all at once.

The naked mole-rat is impervious to pain and cancer, and lives ten times longer than it should -- what can we learn from it?

The naked mole-rat is perhaps one of the most bizarre beasts on the planet.

Why do pets like pats?

I mean... 'cause they're awesome.

The amazing Lyrebird can not only mimic other birds, but also chainsaws, theme songs, and car alarms -- anything, basically

Meet the incredible lyrebird from Australia. And you thought parrots were cool....

Why are there mammals that lay eggs?

Nature always finds a way.

Do cats keep rats away? Not really -- but it's complicated

It's not about the fight, it's about what leads to the fight.

Do dogs have feelings?

If you live with a dog you just know when it’s happy or miserable, don’t you?

What Makes Bats The Perfect Hosts For So Many Viruses?

Bats can maintain just enough defenses against illness without triggering the immune systems from going into overdrive

How Much To Feed Your Dog?

Our best friends love treats. Here's how many calories they need to stay healthy.

Why do snakes flick their tongues?

It's probably not what you think it is.

Why do cats knead?

It's a rare moment when kitty feels relaxed and loved. Don't ruin it!

What are some pollinating animals -- other than bees

There are heaps of other important pollinators!

The Fascinating and Beautiful, Yet Not So Cute Cuttlefish

A truly bizarre marine creature.

Dogs in space: the adventures of the U.S.S.R. canine cosmonauts

A big step for canine-kind.
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