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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: Mon, 23 Jan 2017 11:11:32 +0000

 



Can You Name the Six Different Types of Animals?

2017-01-23T11:11:32Z

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...

2017-01-23T11:11:32Z

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.



Do You Know These Basic Facts About Mammals?

2017-01-23T11:11:32Z

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



Do You Know These 12 Animals of North America?

2017-01-23T11:11:32Z

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



Do You Know These 10 Essential Owl Facts?

2017-01-23T11:11:32Z

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 Ways You Can Help Restore the Balance of...

2017-01-23T11:11:32Z

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.



10 Fun Octopus Facts

2017-01-23T11:11:32Z

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.



The Eight Traits That Make an Animal an Animal

2017-01-23T11:11:32Z

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



Do You Know These 10 Essential Bird Facts?

2017-01-23T11:11:32Z

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.



How Much Do You Know About Arthropods?

2017-01-23T11:11:32Z

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.



These Eight Traits Separate Mammals From Other...

2017-01-23T11:11:32Z

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.



Do You Know These 10 Essential Amphibian Facts?

2017-01-23T11:11:32Z

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.



Population Biology Basics

2017-01-23T11:11:32Z

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



10 Fun Facts About Reptiles

2017-01-23T11:11:32Z

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.



Do You Know These 10 Basic Invertebrate Facts?

2017-01-23T11:11:32Z

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



How Much Do You Know About Mollusks?

2017-01-23T11:11:32Z

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.



What Are Prokaryotes and Eukaryotes?

2017-01-23T11:11:32Z

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



Animals: Multicellular Creatures That Move

2017-01-23T11:11:32Z

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



What Makes a Reptile a Reptile?

2017-01-23T11:11:32Z

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 Giraffes?

2017-01-23T11:11:32Z

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.



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

2017-01-23T11:11:32Z

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.



Cute Birds: The Top 10 Most Adorable Birds

2017-01-23T11:11:32Z

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.



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

2017-01-23T11:11:32Z

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



Facts About Great Horned Owls

2017-01-23T11:11:32Z

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



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

2017-01-23T11:11:32Z

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

2017-01-23T11:11:32Z

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



Do You Know These 10 Fascinating Jellyfish Facts?

2017-01-23T11:11:32Z

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



10 Facts About Dolphins

2017-01-23T11:11:32Z

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.



What Do Turtles Eat?

2017-01-23T11:11:32Z

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



How Do Species Interact?

2017-01-23T11:11:32Z

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



Understanding Communities and Ecosystems

2017-01-23T11:11:32Z

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



The 20 Biggest Mammals, from Whales to Rodents

2017-01-23T11:11:32Z

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



10 Facts About Snowy Owls

2017-01-23T11:11:32Z

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



Top 10 Facts About Animals

2017-01-23T11:11:32Z

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



A Beginner's Guide to Bird Classification

2017-01-23T11:11:32Z

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



Endangered Species: A Closer Look

2017-01-23T11:11:32Z

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



What Is Descent with Modification?

2017-01-23T11:11:32Z

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



How Many Animal Species Are There on Earth?

2017-01-23T11:11:32Z

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



How Much Do You Really Know About Bears?

2017-01-23T11:11:32Z

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



The Mystery of North America's Black Wolves

2017-01-23T11:11:32Z

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

2017-01-23T11:11:32Z

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



Animal Profiles: By Scientific Name

2017-01-23T11:11:32Z

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



10 Facts About Marsupials

2017-01-23T11:11:32Z

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.



Do You Know These 10 Essential Fish Facts?

2017-01-23T11:11:32Z

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.



Squamates: The Flexible-Jawed Reptiles

2017-01-23T11:11:32Z

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



The 3 Basic Fish Groups

2017-01-23T11:11:32Z

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



The 4 Basic Reptile Groups

2017-01-23T11:11:32Z

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



Lion: The Most Social of the Big Cats

2017-01-23T11:11:32Z

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.



The Biggest Threats to Animals and Wildlife

2017-01-23T11:11:32Z

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



Lion Pride: The Social Circle Lions Keep

2017-01-23T11:11:32Z

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



Meet the 21 Orders of Mammals

2017-01-23T11:11:32Z

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).



Learn About Appalachian Mountain Habitat

2017-01-23T11:11:32Z

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



The 10 Most Important Carnivore Facts

2017-01-23T11:11:32Z

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 Animals Are Shaped by Their Environment

2017-01-23T11:11:32Z

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



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

2017-01-23T11:11:32Z

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



Animal Profiles: By Common Name

2017-01-23T11:11:32Z

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



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

2017-01-23T11:11:32Z

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



Zoology: The Science and Study of Animals

2017-01-23T11:11:32Z

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.



Andes: The World's Longest Mountain Chain

2017-01-23T11:11:32Z

The Andes form a chain of mountains that stretch 4,300 miles along the west coast of South America.



Can You Identify These 30 Different Invertebrat...

2017-01-23T11:11:32Z

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



Aquatic Biome: Reefs, Mangroves, and More

2017-01-23T11:11:32Z

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



Tetrapods And The Tricky Transition to Life On...

2017-01-23T11:11:32Z

During the Devonian Period, about 375 million years ago, a group of vertebrates clamoured their way out of the water and onto land.



What Is Sexual Dimorphism?

2017-01-23T11:11:32Z

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



Cetaceans: Mammals of the Sea

2017-01-23T11:11:32Z

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



Segmented Worms: More Than Merely Earthworms

2017-01-23T11:11:32Z

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



Tetrapods: The Four-By-Fours of the Vertebrate...

2017-01-23T11:11:32Z

When tetrapods arrived on the evolutionary stage, the world was forever changed. Find out how these unique vertebrates paved the way for life on land.



The Evolutionary Lessons of Marsupials

2017-01-23T11:11:32Z

By 110 million years ago, mammals had diverged into two groups: the placental mammals and the marsupial mammals.



Keystone Species: Animals With Critical Roles

2017-01-23T11:11:32Z

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.



Why Species Have Niches

2017-01-23T11:11:32Z

Definition of a niche, a term used to describe the role an organism or population plays within its community or ecosystem.



Echinoderms: Famous For Their Five-Point Symmetry

2017-01-23T11:11:32Z

Echinoderms are a group of marine invertebrates that includes star fish, sea lilies, feather stars, brittle stars, sea cucumbers and sea urchins.



Edge Habitats and Their Animal Inhabitants

2017-01-23T11:11:32Z

Across the globe, human development now fragments a once-continuous landscape into isolated patches of natural habitats.



Jellyfish: Flimsy, Floating Carnivores

2017-01-23T11:11:32Z

Jellyfish are a group of carnivorous cnidarians with a bell-shaped body and tentacles. Jellyfish are delicate, soft-bodied animals.



A Guide to the Cnidarians

2017-01-23T11:11:32Z

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.



Chordates: Bilaterally Symmetrical Critters

2017-01-23T11:11:32Z

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



Camouflage

2017-01-23T11:11:32Z

Definition of Camouflage and how it helps animals.



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

2017-01-23T11:11:32Z

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



Cartilaginous Fish: Gentle Giants and Fierce...

2017-01-23T11:11:32Z

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



Cnidarians: The Radially Symmetrical Invertebra...

2017-01-23T11:11:32Z

Cnidarians are a group of aquatic invertebrates that includes jellyfish, corals, sea anemones and hydras.



10 Facts About Zebras

2017-01-23T11:11:32Z

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



Toothed Whales: Belugas, Narwhals, and More

2017-01-23T11:11:32Z

Toothed whales, as their name implies, have teeth, a characteristic that distinguishes them from their baleen whales.



Crocodilians: Good Reptilian Parents

2017-01-23T11:11:32Z

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



Rocky Mountains: The Backbone of the West

2017-01-23T11:11:32Z

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



A Guide to Vertebrates and Invertebrates

2017-01-23T11:11:32Z

One criteria by which all animals are described is whether or not they have a backbone. This article explores facts about vertebrates and invertebrates.



10 Facts About Corals

2017-01-23T11:11:32Z

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



Tundra Biome: The Coldest Biome

2017-01-23T11:11:32Z

Explore the tundra, a remarkable biome where extreme cold, long winters, and nutrient-poor soils push life to its limits.



Do You Know These 10 Basic Primate Facts?

2017-01-23T11:11:32Z

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.



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

2017-01-23T11:11:32Z

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



Brittle Stars: The Sea Stars' Cousins

2017-01-23T11:11:32Z

Brittle stars are a group of echinoderms that includes about 1500 species. Most species inhabit marine habitats with depths greater than 1500 feet.



Marsupials: The Pouched Mammals

2017-01-23T11:11:32Z

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



Myriapods: The Many-Legged Arthropods

2017-01-23T11:11:32Z

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



Turtles: The Carapace-Clad Reptiles

2017-01-23T11:11:32Z

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



Temperate Forests: The Mild-Climate Forests

2017-01-23T11:11:32Z

Temperate forests evolved 65 million years ago when global temperatures dropped and, in areas further from the equator, cooler climates emerged.



Great Barrier Reef

2017-01-23T11:11:32Z

The Great Barrier Reef is the largest coral reef in the world. It is located off the shores of eastern Australia from Bamaga to Bundaberg, Queensland.



Monotremes: The Egg-Laying Mammals

2017-01-23T11:11:32Z

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



Vipers: The Notorious, Venomous, Long-Fanged...

2017-01-23T11:11:32Z

Vipers are a group of snakes that include true vipers, bush vipers, rattlesnakes, pit vipers, adders and night adders.



Bony Fishes: Fish Built On True Bone Scaffolding

2017-01-23T11:11:32Z

Profile of bony fishes, a group of vertebrates characterized by having a bony skeleton unlike the cartilaginous fishes whose skeleton consists of cartilage.



Barn Owls: The Heart-Shaped Face Owls

2017-01-23T11:11:32Z

Barn owls are a group of owls that have a heart-shaped face, long legs and powerful talons. Barn owls are medium-sized birds with a large wingspan.



Mammals of the Arctic National Wildlife Refuge

2017-01-23T11:11:32Z

The Arctic National Wildlife Refuge is located within the arctic circle, in the northeast corner of Alaska.



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

2017-01-23T11:11:32Z

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