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Preview: About.com Animals / Wildlife: Most Popular Articles

About.com Animals & Wildlife: Most Popular Articles



These articles are the most popular over the last month.



Published: Sat, 25 Feb 2017 11:40:25 +0000

 



Can You Name the Six Different Types of Animals?

2017-02-25T11:40:25Z

In this slideshow, you'll discover the six main animal groups, ranging from the simplest (invertebrates) to the most complex (mammals).



Want to Donate Your Money to Wildlife? Here's...

2017-02-25T11:40:25Z

Do you want to donate your money to a reputable, and effective, wildlife conservation organization? Here's our list of the 10 best, ranging from the World Wildlife Fund to the National Audubon Society.



Meet the Corals, Kraits and Dugongs of the...

2017-02-25T11:40:25Z

Fish, corals, molluscs, echinoderms, sea snakes, sponges, birds, and mammals all make their home on the Great Barrier Reef. Here's a look at the most notable animals of this famous marine habitat.



Do You Know These 10 Essential Owl Facts?

2017-02-25T11:40:25Z

How much do you know about owls? Here are 10 essential owl facts, ranging from how these predatory birds hunt to how smart they actually are.



10 Fun Octopus Facts

2017-02-25T11:40:25Z

With their eight tentacles and bigger-than-average brains, octopuses are among the world's most fascinating creatures. Here's a slideshow of 10 essential octopus facts.



Do You Know These 12 Animals of North America?

2017-02-25T11:40:25Z

A slideshow of the 12 most important animals of North America, including mammals, birds, lizards, and butterflies.



Do You Know These Basic Facts About Mammals?

2017-02-25T11:40:25Z

From an evolutionary perspective, mammals are the most advanced animals on our planet. Here are 10 essential facts about mammals that everyone should know.



These Eight Traits Separate Mammals From Other...

2017-02-25T11:40:25Z

What makes mammals different from other vertebrate animals? Here's a slideshow of the eight main mammal characteristics, ranging from hair to four-chambered hearts.



How Much Do You Know About Giraffes?

2017-02-25T11:40:25Z

With their long necks, richly patterned coats and stubby ossicones, Giraffes are among the most recognizable animals on earth. Here are 10 essential Giraffe facts.



Do You Know These 10 Essential Bird Facts?

2017-02-25T11:40:25Z

One of the six basic groups of animals, birds are characterized by their feathers and (in most species) the ability to fly. Here are 10 essential bird facts everyone should know.



10 Fun Facts About Reptiles

2017-02-25T11:40:25Z

They're nowhere near as common as they were 100 million years ago, but reptiles are still some of the most distinctive animals on earth.



Animals: Multicellular Creatures That Move

2017-02-25T11:40:25Z

Explore the vast diversity of animal life, from arrow worms to waterbears, and discover how these remarkable organisms differ from all other living things.



A Beginner's Guide to Bird Classification

2017-02-25T11:40:25Z

In this slideshow, you'll learn about the 30 main bird groups, ranging from albatrosses to woodpeckers.



What Makes a Reptile a Reptile?

2017-02-25T11:40:25Z

Here are the five main reptile characteristics, ranging from their vertebrate anatomies to their habit of laying hard-shelled eggs.



How Much Do You Know About Arthropods?

2017-02-25T11:40:25Z

Arthropods--which include insects, spiders, and crustaceans--are by far the most common animals on earth. Here's a slideshow of 10 essential arthropod facts.



What Do Turtles Eat?

2017-02-25T11:40:25Z

From leaves and grasses to fish and crustaceans, the diet of today's turtles is really quite varied.



Do You Know These 10 Essential Amphibian Facts?

2017-02-25T11:40:25Z

A crucial link between water-dwelling fish and land-dwelling reptiles, amphibians are among the most fascinating animals on earth. Here are 10 fascinating amphibian facts.



10 Ways You Can Help Restore the Balance of...

2017-02-25T11:40:25Z

What can you do to help protect wildlife? Here are 10 useful ideas, ranging from keeping your cat indoors to throwing away your bug zapper.



How Much Do You Know About Mollusks?

2017-02-25T11:40:25Z

Mollusks include creatures as widely divergent in appearance and behavior as snails, clams and cuttlefish. In this slideshow, you'll learn 10 facts about these fascinating invertebrates.



Cute Birds: The Top 10 Most Adorable Birds

2017-02-25T11:40:25Z

Get a glimpse of some of the most adorable birds alive today and discover why each species is more than just cute, it is also entirely unique.



The Eight Traits That Make an Animal an Animal

2017-02-25T11:40:25Z

What exactly is it that defines an animal? Here's a slideshow of the eight main animal characteristics, ranging from multicellularity to sexual reproduction.



Population Biology Basics

2017-02-25T11:40:25Z

Explore the nitty gritty of population biology, a fascinating branch of zoology that investigates the ways in which populations change over time.



How Jellyfish Grow, From Eggs to Polyps to...

2017-02-25T11:40:25Z

Here's a peek at the jellyfish life cycle, all the way from fertilized egg to full-grown adult.



Do You Know These 10 Fascinating Jellyfish Facts?

2017-02-25T11:40:25Z

Ninety-five percent water, equipped with millions of stinging cells, jellyfish are some of the most beautiful (and most dangerous) animals on earth.



Do You Know These 10 Essential Fish Facts?

2017-02-25T11:40:25Z

The world's oceans, lakes, and rivers harbor tens of thousands of fish species. Here are 10 essential facts about fish that everyone should know.



10 Facts About Dolphins

2017-02-25T11:40:25Z

Learn interesting facts about dolphins and find out about the characteristics make them different from other animal groups, their life cycle and their evolutionary history.



Endangered Species: A Closer Look

2017-02-25T11:40:25Z

Scientists and conservationists who study the animal species that face a high risk of extinction refer to such species as endangered species.



The 20 Biggest Mammals, from Whales to Rodents

2017-02-25T11:40:25Z

A comprehensive list of the world's biggest mammals by type, ranging from whales to hedgehogs.



Animal Profiles: By Scientific Name

2017-02-25T11:40:25Z

An A to Z list of animal profiles available at this site, sorted alphabetically by scientific name.



An Animal Can't Live Without These 12 Organ...

2017-02-25T11:40:25Z

Animals are characterized by their wide array of organ systems, which help these organisms breathe, reproduce, and respond to their environment. Here's a slideshow of the 12 main animal organ systems.



Vertebrates: Famous for Their Backbones

2017-02-25T11:40:25Z

Discover how the innovation of a supportive backbone enabled the vertebrates to stand tall and go beyond their chordate ancestors.



Top 10 Facts About Animals

2017-02-25T11:40:25Z

Expand your understanding of animals and learn some of the basics behind their biology as well as a handful of lesser-known animal facts.



What Are Prokaryotes and Eukaryotes?

2017-02-25T11:40:25Z

All living organisms can be sorted into one of two groups depending on the fundamental structure of their cells - prokaryotes or eukaryotes.



Understanding Communities and Ecosystems

2017-02-25T11:40:25Z

Decode some of the jargon that is used in the science of ecology to describe natural communities, populations, and ecosystems.



Do You Know These 10 Basic Invertebrate Facts?

2017-02-25T11:40:25Z

The vast majority of animals on earth are invertebrates—animals that lack backbones and internal skeletons. Here are 10 invertebrate facts everyone should know.



Facts About Great Horned Owls

2017-02-25T11:40:25Z

Great horned owls are a large species of true owls that inhabits many parts of North and South America.



Meet the 21 Orders of Mammals

2017-02-25T11:40:25Z

Are you familiar with the 21 orders, or groups, of mammals? This slideshow will take you on a guided tour, ranging from tiny aardvarks (order Tubulidentata) to much bigger whales and dolphins (order Cetacea).



How Much Do You Really Know About Bears?

2017-02-25T11:40:25Z

Here are 10 essential bear facts, ranging from how these animals hibernate to how they communicate.



10 Facts About Marsupials

2017-02-25T11:40:25Z

Learn interesting facts about marsupials and find out about the characteristics make them different from other animal groups, their life cycle and their evolutionary history.



The Biggest Threats to Animals and Wildlife

2017-02-25T11:40:25Z

Living organisms face a constant barrage of external stresses or threats that challenge their ability to survive and reproduce.



10 Facts About Snowy Owls

2017-02-25T11:40:25Z

Snowy owls are large owls with white plumage and their extreme northerly range which includes tundra habitat throughout Alaska, Canada and Eurasia.



Marsupials: The Pouched Mammals

2017-02-25T11:40:25Z

Marsupials are a group of mammals that give birth to their young at an early stage of their development.



What Is Descent with Modification?

2017-02-25T11:40:25Z

Descent with modification refers to the passing on of traits from parent organisms to their offspring.



Segmented Worms: More Than Merely Earthworms

2017-02-25T11:40:25Z

Segmented worms are bilaterally symmetrical invertebrates that include more than 12,000 species such as earthworms, ragworms and leeches.



The 3 Basic Amphibian Groups: A Beginner's...

2017-02-25T11:40:25Z

Decode the secrets of amphibian classification in this beginner's guide to the three basic amphibian groups.



Animal Profiles: By Common Name

2017-02-25T11:40:25Z

An A to Z list of animal profiles available in The Animal Encyclopedia, sorted alphabetically by common name.



The 10 Most Important Carnivore Facts

2017-02-25T11:40:25Z

Carnivores, including dogs, cats, hyenas, and other mammals, are some of the most dangerous animals on earth. Here are 10 carnivore facts everyone should know.



How Many Animal Species Are There on Earth?

2017-02-25T11:40:25Z

Find out how scientists estimate and count the many millions of animal species that live on our planet today.



Squamates: The Flexible-Jawed Reptiles

2017-02-25T11:40:25Z

Squamates are a group of reptiles that sheds their skin periodically in patches and have uniquely jointed skulls and jaws.



The 4 Basic Reptile Groups

2017-02-25T11:40:25Z

An introduction to the four basic groups of reptiles including crocodilians, lizards, snakes and turtles.



The 3 Basic Fish Groups

2017-02-25T11:40:25Z

An introduction to the basic fish groups including bony fishes and cartilaginous fishes.



Can You Identify These 30 Different Invertebrat...

2017-02-25T11:40:25Z

A slideshow of the 31 different types of invertebrates, ranging from amoeba-like placozoans to worms, lobsters, and octopuses.



Sponges: Glass Sponges, Demosponges, and...

2017-02-25T11:40:25Z

Sponges are a group of simple aquatic invertebrates that include glass sponges, demisponges, and calcareous sponges.



A Guide to the Cnidarians

2017-02-25T11:40:25Z

Cnidarians are diverse and come in many shapes and sizes but there are some basic anatomical features that most members of the group share in common.



Lion Pride: The Social Circle Lions Keep

2017-02-25T11:40:25Z

Gain an intimate view of the social lives of lions, the only species of cat that hangs out in groups called prides.



Aquatic Biome: Reefs, Mangroves, and More

2017-02-25T11:40:25Z

The aquatic biome consists of habitats around the world that are dominated by water, from tropical reefs, to brackish mangroves, to Arctic lakes.



Do You Know These 10 Basic Primate Facts?

2017-02-25T11:40:25Z

The mammalian order of primates includes monkeys, apes, lemurs, and human beings. Here are 10 facts about primates that every scientifically literate person should know.



Habitat Loss, Fragmentation, and Destruction

2017-02-25T11:40:25Z

Habitat destruction is fueled by a fast-growing human population. As human populations increase, we use more land for agriculture, cities, and towns.



How Do Species Interact?

2017-02-25T11:40:25Z

It gets complicated when species share the same habitat. This guide will help you to untangle the many interactions that arise when species mingle.



Learn About Appalachian Mountain Habitat

2017-02-25T11:40:25Z

Profile of the Appalachian Mountain Range, an ancient band of mountains that stretches in a southwestern arc from Newfoundland to Alabama.



Turtles: The Carapace-Clad Reptiles

2017-02-25T11:40:25Z

Turtles are a group of reptiles best known for the hard shell which is a modification of their ribcage and vertebral column.



Meet the Mammals, Birds and Reptiles of the...

2017-02-25T11:40:25Z

A slideshow of the most notable animals inhabiting the Amazon River Basin, including toucans, sloths and piranhas.



How Animals Are Classified

2017-02-25T11:40:25Z

For centuries, the naming and classification of living organisms into groups has been an integral part of the study of nature.



The Mystery of North America's Black Wolves

2017-02-25T11:40:25Z

Despite their name, gray wolves are colorful canines. Their coat color ranges from white to gray to black and is regulated by complex genetic factors.



The Basics of Vertebrate Evolution

2017-02-25T11:40:25Z

An overview of vertebrate evolution that explores the key developments in the evolution of mammals, birds, reptiles, amphibians, and fish.



Insects: The Most Diverse of All Animal Groups

2017-02-25T11:40:25Z

Profile of insects, a highly successful group of animals that accounts for more species of animals than any other class of animals.



What Is Sexual Dimorphism?

2017-02-25T11:40:25Z

Sexual dimorphism is the difference in form between male and female members of the same species.



How Animals Are Shaped by Their Environment

2017-02-25T11:40:25Z

Discover the remarkable ways that animals are shaped by the natural environment in which they live.



Chordates: Bilaterally Symmetrical Critters

2017-02-25T11:40:25Z

From vertebrates to tunicates to lancelets, chordates are a diverse group of animals notable for a rather innovative structure called a notochord.



Lion: The Most Social of the Big Cats

2017-02-25T11:40:25Z

The lion is a species of large cat that has a buff colored coat, white underparts, and a long tail that ends in a black tuft of fur.



Desert Biome: The Driest of All Terrestrial...

2017-02-25T11:40:25Z

The desert biome covers one-fifth of the earth's surface and includes habitats that receive very little rainfall each year.



Cetaceans: Mammals of the Sea

2017-02-25T11:40:25Z

Cetaceans are highly specialized mammals with numerous adaptations that make them well-suited for living in water.



Newts and Salamanders: Long-Tailed, Slender-Bod...

2017-02-25T11:40:25Z

Newts and salamanders are slender-bodied amphibians, with a long tail and usually two pairs of limbs.



The Great Lakes: Erie, Huron, Michigan,...

2017-02-25T11:40:25Z

The Great Lakes is a chain of five large, freshwater lakes that are located in central North America astride the Canada-Unisted States border.



10 Facts About Zebras

2017-02-25T11:40:25Z

Facts about zebras, a group of equids with a distinct black and white striping pattern.



Krakatau: The Island That Exploded

2017-02-25T11:40:25Z

On the morning of August 27, 1883, Krakatau Island was violently re-sculpted. What followed was a dramatic demonstration of wildlife resilience.



Camouflage

2017-02-25T11:40:25Z

Definition of Camouflage and how it helps animals.



Monotremes: The Egg-Laying Mammals

2017-02-25T11:40:25Z

Monotremes are a group of mammals that include echidnas and the platypus.



Why Are Amphibians in Decline?

2017-02-25T11:40:25Z

In recent years, scientists and conservationists have been working to raise public awareness of a global decline in amphibian populations.



Myriapods: The Many-Legged Arthropods

2017-02-25T11:40:25Z

Myriapods are a group of arthropods that includes millipedes, centipedes, pauropods, and symphylans. Myriapods are noted for their having many legs.



Arachnids: The Eight-Legged Arthropods

2017-02-25T11:40:25Z

Arachnids are a diverse group of arthropods that include true spiders, scorpions, harvestmen, ticks and mites.



What Do Reptiles Eat? That Depends on How Big...

2017-02-25T11:40:25Z

Here's a guide to the favorite meals of the major reptile groups: snakes, turtles, crocodiles, lizards, and tuataras.



Rocky Mountains: The Backbone of the West

2017-02-25T11:40:25Z

The Rocky Mountains stretch through western North America from Alaska to New Mexico, forming the middle section of the Western Cordillera.



Cartilaginous Fish: Gentle Giants and Fierce...

2017-02-25T11:40:25Z

Cartilaginous fishes are a group of fishes that includes the largest and most formidable marine predators alive today: the sharks.



Crocodilians: Good Reptilian Parents

2017-02-25T11:40:25Z

Crocodilians are a group of large reptiles that includes crocodiles, alligators, caimans, and the gharial.



Keystone Species: Animals With Critical Roles

2017-02-25T11:40:25Z

Discover how some species can be the glue that holds an entire ecosystem together. And find out why such keystone species are sometimes the least likely critter.



Zoology: The Science and Study of Animals

2017-02-25T11:40:25Z

Zoology is the study of animals; yet this definition implies a simplicity that does not exist; instead, zoology is a complex discipline, drawing upon a diverse body of scientific observation and theory.



Top 10 Facts About Frogs

2017-02-25T11:40:25Z

Explore the fascinating world of frogs in this fact-packed guide to the most celebrated and farthest-hopping of all amphibians.



10 Facts About Corals

2017-02-25T11:40:25Z

Learn about corals and find out about their diversity, evolutionary history and the characteristics make them different from other invertebrate groups.



Lizards: Artful Danger-Dodgers

2017-02-25T11:40:25Z

Lizards are a diverse group of squamates that includes iguanas, chameleons, geckos, night lizards, blind lizards, beaded lizards, and many others.



Tiger: The World's Largest and Most Powerful Cat

2017-02-25T11:40:25Z

Tigers are the largest and most powerful of all cats. Tigers have a distinct orange coat, black stripes and white markings.



Learn About the Stages in a Frog's Life

2017-02-25T11:40:25Z

The life cycle of a frog includes three stages: egg, larva, and adult. This article explores the developmental changes a frog experiences in its life.



Grassland Biome: Where Grasses Rule and Trees...

2017-02-25T11:40:25Z

The grassland biome is a terrestrial biome with a vegetation structure that is dominated by grasses and that is largely void of trees or shrubs.



Eastern Gorillas: The World's Largest Primate...

2017-02-25T11:40:25Z

Eastern gorillas are an endangered species of great ape that inhabits lowland and montane cloud forests in the eastern parts of equatorial Africa.



Crustaceans: The Krill and Their Close Kin

2017-02-25T11:40:25Z

Crustaceans are a group of arthropods that includes lobsters, crabs, and many other groups. There are about 42,000 species of crustaceans alive today.



Oceanic Dolphins: The Most Diverse Group of...

2017-02-25T11:40:25Z

Oceanic dolphins are a group of cetaceans that includes dolphins, pilot whales, and killer whales. Many species of oceanic dolphins are highly social.



A Glossary of Zoology Terms

2017-02-25T11:40:25Z

This glossary defines terms that you might encounter when studying zoology.