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.

Topics to Explore

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Are chimpanzees evolving in the wild?

Until now, no one has documented a definite case of chimpanzees using tools to hunt in the traditional sense. Find out what a new study on chimpanzees may reveal about human evolution.

How Ticks Work

Ticks are parasites that feed on the blood of their hosts -- human or otherwise -- and are known for carrying diseases. Learn all about ticks, including how to remove them.

How Fleas Work

Fleas have three real talents – eating, breeding and waiting. If you leave your home and take your pets with you, any fleas inside will just wait for you to return so they can get back to eating blood and making babies.

Why do humans walk on two legs?

Did you know you conserve energy every time you walk across a room? You do, in evolutionary terms at least. Find out how and why humans began walking upright and what this has to do with our body's energy use.

Do cows pollute as much as cars?

Cow flatulence produces the greenhouse gas methane, which is linked to global warming. Find out how scientists are working to reduce cow flatulence in livestock.

Is there a 400 pound lobster out there?

Although no one can yet tell how old lobsters get, they show no apparent signs of aging. Learn why lobsters live so long and get so big, and what this means for other animals, including humans.

How Bees Work

Bees exhibit many traits found in stories and myths -- traits that have led many cultures to view them with reverence or awe. Explore how bees make honey and examine the potential causes and effects of Colony Collapse Disorder.

How can whale vomit help me retire?

If you're wandering through a thrift store and happen upon a large mass of some sort of waxy substance, take a closer look. It could be the rare "floating gold" of the sea: whale vomit. Find out whether cetacean upchuck can help you retire.

How Cockroaches Work

Entomologists estimate that there are between 5 and 10 million species of insects on Earth. But if asked which insect they hate the most, many people would have no trouble choosing just one -- the cockroach.

How Jellyfish Work

Although jellyfish have been around for over 650 million years, they're still very mysterious. Learn the all about the fascinating jellyfish life cycle.

How Snakes Work

A snake can swallow an animal that’s twice as big as its own head -- and swallow it whole. Snakes are amazing creatures with some astonishing capabilities. Did you know that a few of them can even fly? Learn how snakes get around, how they kill and eat their prey, and how they court and reproduce.

How Cicadas Work

If you're tired of the quiet, take heart: The latest swarm of periodical cicadas (Brood II) is emerging along the East Coast right now. They produce a "song" that can reach 120 decibels -- very close to a level that can damage human ear drums.

How Alligators Work

Alligators are amazing animals that have been around for millions of years. These fearsome creatures are expert predators at the top of the food chain.

How Spiders Work

Love 'em or hate 'em, you've got to admit that spiders are some pretty impressive animals. Movies like "Arachnophobia", "Spider-Man" and "Eight Legged Freaks" even spin their stories around spiders. Check out the real-life web-slinging, wall-crawling, venom-injecting inspiration.

How Whales Work

Despite their monumental proportions, the most phenomenal thing about whales isn't how big they are: It's the way they live. Whales are mammals -- warm-blooded, air-breathing creatures -- but they spend their entire life in the ocean. Find out about these awe-inspiring creatures.

Why are moths attracted to light?

I always see moths circling around and landing on my porch light. Why do they do this? Is it somehow advantageous to them?

How Mosquitoes Work

In 2005, there were 3,000 verified cases of West Nile Virus in the U.S. alone, and we can probably expect even more this year. This mosquito-borne disease keeps popping up. Find out all about mosquitoes.

How Bats Work

Think you know what bats are all about? Chances are you're operating under at least a couple of misconceptions. Sort out the facts from the myths and see what makes bats so unique.

Do whales and dolphins sleep?

Do whales and dolphins sleep? I know they have to come to the surface of the water periodically to breathe, so wouldn't they die if they dozed off?

How Do Oysters Make Pearls?

Oysters can create pearls from a single grain of sand. How exactly does an oyster create a pearl, and what is the difference between a natural pearl and a cultured pearl?

How Sharks Work

The oldest shark fossils date from more than 300 million years ago, before the dinosaurs. A few species have kept the same physical characteristics for more than 150 million years. How have they survived so well?

How do flies breathe?

Insect respiration is very different from that of a human. Insects do not have lungs that deliver oxygen to all of the cells in their body. So how exactly do flies and other insects breathe then? Find out the answer to that question in this article.

How do fireflies light up?

When flickering fireflies light up the summer night, they’re not showing off – they’re talking to each other. How do these insects make their abdomens glow?


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