Animal Facts

Learn about some of the strange and unusual facts and terms in the animal kingdom.


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What's the largest land animal of all time?

Just how big do animals come? Dive backward through time and the fossil record in search of the most colossal member of kingdom Animalia.

How Animal Imprinting Works

Ever wonder why some birds end up following a mother of another species? It has a lot to do with who (or what) is around when they hatch. So maybe keep your distance the next time you spot a nest.

HowStuffWorks: Zoo Atlanta’s New Slimy, Scaly Spectacular

Join HowStuffWork's Robert Lamb as he visits Zoo Atlanta's new Scaly Slimy Spectacular home for reptiles and amphibians.

10 Insects We Love to Study

They're found in stupendous numbers, they don't take up much lab space and they have an awful lot to teach us about the world and its residents. Meet 10 of the insects we just can't stop studying.

10 Recent Breakthroughs in Marine Biology

Marine biologists have discovered a lot about the ocean's residents while you were busy dozing on the beach. We've dug up 10 of their coolest discoveries.

Is hippo milk really pink?

The pink hippo milk myth is the ultimate lesson for those who believe everything they read on the Web.

Has a whale ever swallowed someone alive?

Fancy yourself a modern-day Jonah? Keep in mind that this most famous of whale tales never scientifically considers if a whale has ever really swallowed someone alive.

Are there really elephant graveyards?

The elephant graveyard lends an air of romance and mystery to the mighty animal, but in reality, it's just a myth.

Are dogs colorblind?

Your dog sees the world in color, not in black and white. Though dogs are often described as colorblind, they see much more than you'd expect.

Can animals count?

Pet owners love to brag about their furry friends, but have you ever wondered whether your dog or cat can count? You may be surprised to learn about the mathematical prowess of some common animals.

Can animals understand human language?

Many humans are sure their pets understand a variety of commands – but what do the experts have to say? Read on to find out exactly how much animals grasp the English language.

Do mice really love cheese?

If you're plagued by rodents, the only sure way to catch them is to load a mousetrap with a large wedge of cheese, right? Wrong – to catch mice, think sweet!

10 Cretaceous Animals That Weren’t Dinosaurs

The dinos hog all the Cretaceous headlines. Do you have any idea what else scurried, hopped and otherwise cruised around Earth before the K-T mass extinction?

5 Food Animals That Are Smarter Than Your Pet

Meet the pig: It can employ evasive maneuvers and play video games with joysticks, among other porcine talents. Kind of a whole different take on bacon, isn't it?

10 Wildly Wrong Animal Stereotypes

The world is full of cuddly koalas, loyal dogs and friendly dolphins. Or is it? Even positive animal stereotypes can be dangerous if they lead to humans making poor judgment calls.

10 Completely Wrong Sayings About Animals

Ever been told you're as stubborn as a mule or blind as a bat? It might have been an unintended compliment. Many common sayings about animals are really off the mark.

10 Superhero Powers of the Animal Kingdom

Flying and being invisible are NOT the only superpowers. What if you could freeze yourself and then reanimate? What if you could survive space without any help from NASA like tardigrades can? Time to introduce a few new superpowers into your arsenal.

10 Real Animals That Seem Make-believe

The natural world boasts an incredible diversity of animals, some of which are so colorful and bizarre that they seem made-up. Meet 10 very creative creatures.

10 Surprising Things Animals Do With Their Babies

One bird parent flies for miles, dunks itself in water and returns the nest to let babies actually suck the water from its feathers. Another turns a blind eye to sibling shenanigans that can turn deadly. Can you name these animal parents?

10 Crazy Facts You Didn't Know About Animals

You might know that a cheetah can run 70 mph, but did you know that hens can change sex or that leeches have three sets of jaws? Here are 10 really strange animal facts.

How Guide Dogs Work

These canines are more than just your average furry friends: They can mean a whole lifestyle change for some people.

10 Surprising Behaviors in Nonhuman Animals

One animal procrastinates. Another is famous for making out. Yet another might remember faces better than you do. Our nonhuman cohorts are capable of much more than instinct and action. Here are 10 captivating examples.

Top 10 Famous Racehorses

What does it take to be a successful race horse? Learn about the best jockeys with this famous racehorse countdown.

Top 10 Animal vs. Aircraft Stories

Take a look at the top 10 bird strike stories throughout the history of aviation, from near misses to direct hits, and the aftermath that followed.

Top 10 Predators

Check out the top 10 most feared predators of the animal kingdom.