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.
Their mamas may be the only ones who can tell them apart, but there are major differences between these cousins, one being the type of water in which they can survive.
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.
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.
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.
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.
One of the most venomous snakes alive, the black mamba warns off encroachment with a fearsome hiss and the ominous flaring of its two cobra-like neck flaps.
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.
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.
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.
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.
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!
The energy efficiency of the Andean condor is the avian embodiment of the phrase "work smarter, not harder."
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.
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.
The swordfish's nose might look crazy weird, but these gladiators of the sea are perfectly outfitted for ocean battle.
A remarkable partnership has formed over centuries between honeyguide birds and humans — and both species benefit when the honey is found and the comb is cracked.
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.