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.
12 Colorful Frog Species: From Tie-dyed Designs to Rare Hues
Amazon Milk Frog: Named for Its Defense, Not Its Color
The Red-eyed Tree Frog Has Extremely Sensitive Skin
What Is a Group of Spiders Called? (Aside From Icky)
What Is a Group of Ants Called? Army vs. Colony vs. Swarm
10 Red Butterfly Species Found From India to Florida to Europe
What Is a Group of Swans Called? Not a Flock
What Is a Group of Ducklings Called? It's Surprisingly Moody
What Group of Birds Is Called a Parliament?
What Is a Group of Fish Called? Not Always a School
10 Weirdest Fish in the World: Batfish, Hairy Frogfish, and More
10 Scariest Fish Lurking in Rivers, Deep Ocean Waters, and Shells
What Is a Group of Hedgehogs Called? It's Adorably Appropriate
What Is a Group of Otters Called? The Official Terms Are Adorable
What Is a Group of Skunks Called? Here's Why You've Never Asked Before
10 of the Scariest Sea Creatures Lurking in the Ocean's Depths
How Bioluminescent Jellyfish Get Their Signature Glow
White Spotted Jellyfish: Cute Until They Become Invasive
What Is a Group of Alligators Called? It Sounds Surprisingly Formal
10 Cutest Snake Species That Have Us Squeeing
10 Colorful Lizards to Delight Reptile Lovers
Learn More / Page 19
One of the largest crocodiles ever was so big that one website called the species "bus-sized."
By Yara Simón
Hummingbird feeders are a great way to help those little fliers, but to feed them responsibly, you need to keep your feeders clean and fill them correctly.
Bees can learn, make decisions and have a sense of smell 100 times more sensitive than ours. And most don't live in hives. Here are some cool facts about bees.
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Just one bite from any of these venomous snakes could cost you your life. They're some of the deadliest snakes in the world and you don't want to mess with them.
They are all huge, but does it surprise you that none of the nine biggest birds can fly?
Sharks: They are the stuff of legend and the stuff of nightmares. But which are the biggest? Here are the top 10.
By Carrie Tatro
The pink fairy armadillo looks like something out of a children's book and is so rare that very few people have ever seen one.
By Carrie Tatro
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A new study dispels the myth that snakes are deaf to airborne sounds and reveals that different species react differently to the sounds they hear.
Like something out of a horror film, this parasitic worm invades a snail's eyestalks, where it pulsates to imitate a caterpillar, attracting the ultimate target, a bird.
By Mark Mancini
There are tons of squirrel species around the world. Do they all have the same life span?
Estimating ant numbers and mass provides an important baseline from which to monitor ant populations amid worrying environmental changes.
By Mark Wong
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It's a slippery proposition, to be sure, but bees do it, birds do it and you can bet that eels do it too. The question is, how do eels reproduce?
By Mark Mancini
Unlike most species on Earth, the male seahorse, rather than the female, does the gestating and delivery. And he does it in his own unique way, a new study found.
During the fall months, you may see unfamiliar birds in your area as those from the north begin to fly south. But how do they know when it's time to migrate and where to go?
By Alia Hoyt
While you may not want to encounter one on a hike, there's no denying that snakes are magnificent creatures - no matter how big or small they are. But when it comes to the biggest snakes in the world, nature truly knows no bounds.
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You don't want an animal living in your house that's smarter than a raccoon and never rests.
Sailfish are the fastest known animal in the ocean. Just how fast? As fast as a cheetah. That's how fast.
Don't freak out with worry if you see a splooting squirrel - he's just cooling off in the best way he knows how.
The most iconic agricultural pest of the past 200 years just wants to eat your potato plant.
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While they may incite fear due to their impressive dimensions, these spiders play crucial roles in their ecosystems and have become subjects of significant scientific interest and study.
Cymothoa exigua will make you feel very glad you're not a fish.
These massive mollusks are one of the world's most invasive species. They have the potential to devastate Florida's agriculture. Oh, and they can cause meningitis in humans.
By Sarah Gleim
Though it's true that joeys poop in their mother's pouch, also known as the marsupium, it's still a pretty cozy place to spend the first few months of life.
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It's hard to imagine Nemo catching some z's in the Great Barrier Reef. But fish do need rest. Do they sleep like we do?
Cone snails are marine animals that harpoon their prey and incapacitate them with deadly toxins. They may be beautiful, but they are highly venomous.