Wild Animals
Whether they crawl, fly, swim, slither, walk, run or pounce, wild animals rely on their instincts. Read about all kinds of wild animals, mammals, birds, fish, insects, reptiles and amphibians.
Golden Poison Dart Frog Eats Toxic Insects for Its Own Poison
Toad vs. Frog: Differences in Anatomy, Habitat and More
What's the Difference Between a Newt and Salamander?
The Most Dangerous Insect (and 13 Others to Avoid)
The Most Dangerous Wasp and 9 Other Stingers to Avoid
The Tsetse Fly, Blood Meals and African Sleeping Sickness
The World's Most Dangerous Bird and 9 Runners-up
The 3 Types of Ducks Every Birdwatcher Should Know
10 Types of Owls: From Tiny Screech-owls to Great Horned Owls
13 Most Dangerous Fish, Eels and Sharks
The Stonefish Hides in Plain Sight and Packs a Painful Sting
The Pufferfish Really Isn't Happy to See You
Why Grolar Bear Numbers Increase With Climate Change
The Most Dangerous Bear and 9 Others to Give a Wide Berth
The World's Most Dangerous Cat and 14 Other Fierce Felines
20 of the Most Dangerous Sea Creatures in the Deep Blue
8 Most Dangerous Jellyfish and 1 Stinging Imposter
Freshwater Snails: Helpful Carriers of Harmful Parasites
So, the American Alligator Can Climb Trees ... How Terrifying
Saw-scaled Viper: Opportunistic, Fast and Highly Venomous
Inland Taipan: Most Venomous Snake in the World
Learn More / Page 11
Despite their name, rat snakes don't eat just rodents. This huge family of snakes, which lives on every continent except Antarctica, also eats lizards and amphibians.
By Mark Mancini & Zach Taras
From the four-headed male reproductive organ to hosting the world's largest flea and sporting a body covered in spiny hairs, this cute little creature takes the cake for mammalian weirdness.
By Wendy Bowman
Most species of the rarely seen anglerfish live up to a mile beneath the ocean, where the females lure prey with a head-dangling hook appendage and permanently fuse with male suitors. It doesn't get much stranger than that.
By Katie Carman & Talon Homer
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Black widow spider venom can be deadly but how likely are you to be bitten? It might surprise you that these arachnids are on the shy side.
While the black mamba possesses a lethal bite and formidable hunting skills, the snake's size and speed fall short of its legendary reputation.
The protection of these strange looking, ancient animals, and creatures like them, may be a key component in helping a planet in climate catastrophe.
While the cheetah is the fastest land animal in the world, the peregrine falcon, a large predatory raptor, is by far the fastest bird on planet Earth.
By Wendy Bowman
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These brightly colored crustaceans can smash aquarium glass or quickly cut through a human finger, so whatever you do, keep your distance.
Pikas are little mammals that, though they may look like rodents, are more closely related to rabbits.
Biochemically like a heron and anatomically similar to a pelican, the shoebill stork has been called "Monsterface" and even "Death Pelican." But wait until you hear the staccato rat-a-tat-tat of its booming machine-gun call.
By Carrie Tatro & Zach Taras
This kitten-looking wild cat is known as the 'hummingbird of the cat family' and could almost fit in the palm of your hand, but its diminutive size belies a ferocious personality.
By Wendy Bowman
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Aardwolves aren't closely related to either aardvarks or wolves, but these little hyenas resemble both in some ways.
While luna moths aren't exactly rare, they're hard to find so every encounter seems extra special.
Generations of cereal eaters grew up sharing the breakfast table with Toucan Sam, famous for following his long, colorful nose - but what's that bill for besides hawking cereal?
That's right - daddy longlegs isn't an actual kind of spider, but a colloquial name that's been applied to a wide range of spiders and non-spiders, insects and non-insects.
By Mark Mancini
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The stoat and the weasel might look alike, but they're not the same animal. The stoat is a serious predator that kills its prey like a vampire!
By Wendy Bowman
Lemmings don't commit mass suicide as is popularly believed, but they are aggressive and have even been known to charge larger predators.
Technically they're called tanuki, but these furry critters might as well be called raccoon dogs because that's what they look like. So are they just as domesticated and loving as the canines we know?
These two sea creatures can be easy to confuse. But they're actually quite different. We talked to experts to find out how to tell them apart.
By Wendy Bowman
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There are more than 50 species of snakes that live in the seas. Some are super venomous and they can zip through the water with ease.
By Mark Mancini & Talon Homer
The swordfish's nose might look crazy weird, but these gladiators of the sea are perfectly outfitted for ocean battle.
The prehistoric-looking alligator snapping turtle is the largest freshwater turtle in North America and has a bite that, it's said, can snap a wooden broom handle in half.
By Mark Mancini
Roly-poly bugs are natural soil conditioners because they process decomposing matter, helping keep your garden soil clean and healthy. And - fun fact - they're crustaceans, not insects.
By Jeremy Glass
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The snakehead fish can breathe air, double its population in 15 months and has a huge appetite, which is not a good thing for native species.
Spider monkeys, an endangered species, are the largest monkeys in the Americas and live in the forest canopy, where they swing through the trees with the greatest of ease.