Published: Sat, 25 Feb 2017 11:40:25 +0000
2017-02-25T11:40:25ZIn this slideshow, you'll discover the six main animal groups, ranging from the simplest (invertebrates) to the most complex (mammals).
2017-02-25T11:40:25ZDo 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.
2017-02-25T11:40:25ZFish, 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.
2017-02-25T11:40:25ZHow 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.
2017-02-25T11:40:25ZWith 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.
2017-02-25T11:40:25ZA slideshow of the 12 most important animals of North America, including mammals, birds, lizards, and butterflies.
2017-02-25T11:40:25ZFrom an evolutionary perspective, mammals are the most advanced animals on our planet. Here are 10 essential facts about mammals that everyone should know.
2017-02-25T11:40:25ZWhat makes mammals different from other vertebrate animals? Here's a slideshow of the eight main mammal characteristics, ranging from hair to four-chambered hearts.
2017-02-25T11:40:25ZWith their long necks, richly patterned coats and stubby ossicones, Giraffes are among the most recognizable animals on earth. Here are 10 essential Giraffe facts.
2017-02-25T11:40:25ZOne 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.
2017-02-25T11:40:25ZThey're nowhere near as common as they were 100 million years ago, but reptiles are still some of the most distinctive animals on earth.
2017-02-25T11:40:25ZExplore the vast diversity of animal life, from arrow worms to waterbears, and discover how these remarkable organisms differ from all other living things.
2017-02-25T11:40:25ZIn this slideshow, you'll learn about the 30 main bird groups, ranging from albatrosses to woodpeckers.
2017-02-25T11:40:25ZHere are the five main reptile characteristics, ranging from their vertebrate anatomies to their habit of laying hard-shelled eggs.
2017-02-25T11:40:25ZArthropods--which include insects, spiders, and crustaceans--are by far the most common animals on earth. Here's a slideshow of 10 essential arthropod facts.
2017-02-25T11:40:25ZFrom leaves and grasses to fish and crustaceans, the diet of today's turtles is really quite varied.
2017-02-25T11:40:25ZA 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.
2017-02-25T11:40:25ZWhat can you do to help protect wildlife? Here are 10 useful ideas, ranging from keeping your cat indoors to throwing away your bug zapper.
2017-02-25T11:40:25ZMollusks 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.
2017-02-25T11:40:25ZGet 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.
2017-02-25T11:40:25ZWhat exactly is it that defines an animal? Here's a slideshow of the eight main animal characteristics, ranging from multicellularity to sexual reproduction.
2017-02-25T11:40:25ZExplore the nitty gritty of population biology, a fascinating branch of zoology that investigates the ways in which populations change over time.
2017-02-25T11:40:25ZHere's a peek at the jellyfish life cycle, all the way from fertilized egg to full-grown adult.
2017-02-25T11:40:25ZNinety-five percent water, equipped with millions of stinging cells, jellyfish are some of the most beautiful (and most dangerous) animals on earth.
2017-02-25T11:40:25ZThe world's oceans, lakes, and rivers harbor tens of thousands of fish species. Here are 10 essential facts about fish that everyone should know.
2017-02-25T11:40:25ZLearn interesting facts about dolphins and find out about the characteristics make them different from other animal groups, their life cycle and their evolutionary history.
2017-02-25T11:40:25ZScientists and conservationists who study the animal species that face a high risk of extinction refer to such species as endangered species.
2017-02-25T11:40:25ZA comprehensive list of the world's biggest mammals by type, ranging from whales to hedgehogs.
2017-02-25T11:40:25ZAn A to Z list of animal profiles available at this site, sorted alphabetically by scientific name.
2017-02-25T11:40:25ZAnimals 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.
2017-02-25T11:40:25ZDiscover how the innovation of a supportive backbone enabled the vertebrates to stand tall and go beyond their chordate ancestors.
2017-02-25T11:40:25ZExpand your understanding of animals and learn some of the basics behind their biology as well as a handful of lesser-known animal facts.
2017-02-25T11:40:25ZAll living organisms can be sorted into one of two groups depending on the fundamental structure of their cells - prokaryotes or eukaryotes.
2017-02-25T11:40:25ZDecode some of the jargon that is used in the science of ecology to describe natural communities, populations, and ecosystems.
2017-02-25T11:40:25ZThe vast majority of animals on earth are invertebrates—animals that lack backbones and internal skeletons. Here are 10 invertebrate facts everyone should know.
2017-02-25T11:40:25ZGreat horned owls are a large species of true owls that inhabits many parts of North and South America.
2017-02-25T11:40:25ZAre 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).
2017-02-25T11:40:25ZHere are 10 essential bear facts, ranging from how these animals hibernate to how they communicate.
2017-02-25T11:40:25ZLearn interesting facts about marsupials and find out about the characteristics make them different from other animal groups, their life cycle and their evolutionary history.
2017-02-25T11:40:25ZLiving organisms face a constant barrage of external stresses or threats that challenge their ability to survive and reproduce.
2017-02-25T11:40:25ZSnowy owls are large owls with white plumage and their extreme northerly range which includes tundra habitat throughout Alaska, Canada and Eurasia.
2017-02-25T11:40:25ZMarsupials are a group of mammals that give birth to their young at an early stage of their development.
2017-02-25T11:40:25ZDescent with modification refers to the passing on of traits from parent organisms to their offspring.
2017-02-25T11:40:25ZSegmented worms are bilaterally symmetrical invertebrates that include more than 12,000 species such as earthworms, ragworms and leeches.
2017-02-25T11:40:25ZDecode the secrets of amphibian classification in this beginner's guide to the three basic amphibian groups.
2017-02-25T11:40:25ZAn A to Z list of animal profiles available in The Animal Encyclopedia, sorted alphabetically by common name.
2017-02-25T11:40:25ZCarnivores, including dogs, cats, hyenas, and other mammals, are some of the most dangerous animals on earth. Here are 10 carnivore facts everyone should know.
2017-02-25T11:40:25ZFind out how scientists estimate and count the many millions of animal species that live on our planet today.
2017-02-25T11:40:25ZSquamates are a group of reptiles that sheds their skin periodically in patches and have uniquely jointed skulls and jaws.
2017-02-25T11:40:25ZAn introduction to the four basic groups of reptiles including crocodilians, lizards, snakes and turtles.
2017-02-25T11:40:25ZAn introduction to the basic fish groups including bony fishes and cartilaginous fishes.
2017-02-25T11:40:25ZA slideshow of the 31 different types of invertebrates, ranging from amoeba-like placozoans to worms, lobsters, and octopuses.
2017-02-25T11:40:25ZSponges are a group of simple aquatic invertebrates that include glass sponges, demisponges, and calcareous sponges.
2017-02-25T11:40:25ZCnidarians 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.
2017-02-25T11:40:25ZGain an intimate view of the social lives of lions, the only species of cat that hangs out in groups called prides.
2017-02-25T11:40:25ZThe aquatic biome consists of habitats around the world that are dominated by water, from tropical reefs, to brackish mangroves, to Arctic lakes.
2017-02-25T11:40:25ZThe mammalian order of primates includes monkeys, apes, lemurs, and human beings. Here are 10 facts about primates that every scientifically literate person should know.
2017-02-25T11:40:25ZHabitat destruction is fueled by a fast-growing human population. As human populations increase, we use more land for agriculture, cities, and towns.
2017-02-25T11:40:25ZIt gets complicated when species share the same habitat. This guide will help you to untangle the many interactions that arise when species mingle.
2017-02-25T11:40:25ZProfile of the Appalachian Mountain Range, an ancient band of mountains that stretches in a southwestern arc from Newfoundland to Alabama.
2017-02-25T11:40:25ZTurtles are a group of reptiles best known for the hard shell which is a modification of their ribcage and vertebral column.
2017-02-25T11:40:25ZA slideshow of the most notable animals inhabiting the Amazon River Basin, including toucans, sloths and piranhas.
2017-02-25T11:40:25ZFor centuries, the naming and classification of living organisms into groups has been an integral part of the study of nature.
2017-02-25T11:40:25ZDespite their name, gray wolves are colorful canines. Their coat color ranges from white to gray to black and is regulated by complex genetic factors.
2017-02-25T11:40:25ZAn overview of vertebrate evolution that explores the key developments in the evolution of mammals, birds, reptiles, amphibians, and fish.
2017-02-25T11:40:25ZProfile of insects, a highly successful group of animals that accounts for more species of animals than any other class of animals.
2017-02-25T11:40:25ZSexual dimorphism is the difference in form between male and female members of the same species.
2017-02-25T11:40:25ZDiscover the remarkable ways that animals are shaped by the natural environment in which they live.
2017-02-25T11:40:25ZFrom vertebrates to tunicates to lancelets, chordates are a diverse group of animals notable for a rather innovative structure called a notochord.
2017-02-25T11:40:25ZThe 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.
2017-02-25T11:40:25ZThe desert biome covers one-fifth of the earth's surface and includes habitats that receive very little rainfall each year.
2017-02-25T11:40:25ZCetaceans are highly specialized mammals with numerous adaptations that make them well-suited for living in water.
2017-02-25T11:40:25ZNewts and salamanders are slender-bodied amphibians, with a long tail and usually two pairs of limbs.
2017-02-25T11:40:25ZThe Great Lakes is a chain of five large, freshwater lakes that are located in central North America astride the Canada-Unisted States border.
2017-02-25T11:40:25ZFacts about zebras, a group of equids with a distinct black and white striping pattern.
2017-02-25T11:40:25ZOn the morning of August 27, 1883, Krakatau Island was violently re-sculpted. What followed was a dramatic demonstration of wildlife resilience.
2017-02-25T11:40:25ZDefinition of Camouflage and how it helps animals.
2017-02-25T11:40:25ZMonotremes are a group of mammals that include echidnas and the platypus.
2017-02-25T11:40:25ZIn recent years, scientists and conservationists have been working to raise public awareness of a global decline in amphibian populations.
2017-02-25T11:40:25ZMyriapods are a group of arthropods that includes millipedes, centipedes, pauropods, and symphylans. Myriapods are noted for their having many legs.
2017-02-25T11:40:25ZArachnids are a diverse group of arthropods that include true spiders, scorpions, harvestmen, ticks and mites.
2017-02-25T11:40:25ZHere's a guide to the favorite meals of the major reptile groups: snakes, turtles, crocodiles, lizards, and tuataras.
2017-02-25T11:40:25ZThe Rocky Mountains stretch through western North America from Alaska to New Mexico, forming the middle section of the Western Cordillera.
2017-02-25T11:40:25ZCartilaginous fishes are a group of fishes that includes the largest and most formidable marine predators alive today: the sharks.
2017-02-25T11:40:25ZCrocodilians are a group of large reptiles that includes crocodiles, alligators, caimans, and the gharial.
2017-02-25T11:40:25ZDiscover 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.
2017-02-25T11:40:25ZZoology 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.
2017-02-25T11:40:25ZExplore the fascinating world of frogs in this fact-packed guide to the most celebrated and farthest-hopping of all amphibians.
2017-02-25T11:40:25ZLearn about corals and find out about their diversity, evolutionary history and the characteristics make them different from other invertebrate groups.
2017-02-25T11:40:25ZLizards are a diverse group of squamates that includes iguanas, chameleons, geckos, night lizards, blind lizards, beaded lizards, and many others.
2017-02-25T11:40:25ZTigers are the largest and most powerful of all cats. Tigers have a distinct orange coat, black stripes and white markings.
2017-02-25T11:40:25ZThe life cycle of a frog includes three stages: egg, larva, and adult. This article explores the developmental changes a frog experiences in its life.
2017-02-25T11:40:25ZThe grassland biome is a terrestrial biome with a vegetation structure that is dominated by grasses and that is largely void of trees or shrubs.
2017-02-25T11:40:25ZEastern gorillas are an endangered species of great ape that inhabits lowland and montane cloud forests in the eastern parts of equatorial Africa.
2017-02-25T11:40:25ZCrustaceans are a group of arthropods that includes lobsters, crabs, and many other groups. There are about 42,000 species of crustaceans alive today.
2017-02-25T11:40:25ZOceanic dolphins are a group of cetaceans that includes dolphins, pilot whales, and killer whales. Many species of oceanic dolphins are highly social.
2017-02-25T11:40:25ZThis glossary defines terms that you might encounter when studying zoology.