Published: Fri, 21 Oct 2016 11:10:05 +0000
2016-10-21T11:10:05ZIn this slideshow, you'll discover the six main animal groups, ranging from the simplest (invertebrates) to the most complex (mammals).
2016-10-21T11:10:05ZDo 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.
2016-10-21T11:10:05ZIt's easy to feel overwhelmed in the face of species loss and habitat destruction. Here is a list of things you can do to help protect wildlife.
2016-10-21T11:10:05ZA slideshow of the 12 most important animals of North America, including mammals, birds, lizards, and butterflies.
2016-10-21T11:10:05ZA list of some of the animals that inhabit the Great Barrier Reef including sea birds, mollusks, marine mammals, marine reptiles, and more.
2016-10-21T11:10:05ZFrom an evolutionary perspective, mammals are the most advanced animals on our planet. Here are 10 essential facts about mammals that everyone should know.
2016-10-21T11:10:05ZFacts about owls, a group of birds known for their distinct calls, nocturnal habits, and silent flight.
2016-10-21T11:10:05ZOne 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.
2016-10-21T11:10:05ZAn introduction to six basic groups of invertebrates including arthropods, cnidarians, echinoderms, mollusks, segmented worms, and sponges.
2016-10-21T11:10:05ZA 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.
2016-10-21T11:10:05ZIn this slideshow, you'll learn about the 30 main bird groups, ranging from albatrosses to woodpeckers.
2016-10-21T11:10:05ZScientists and conservationists who study the animal species that face a high risk of extinction refer to such species as endangered species.
2016-10-21T11:10:05ZWhat makes mammals different from other vertebrate animals? Here's a slideshow of the eight main mammal characteristics, ranging from hair to four-chambered hearts.
2016-10-21T11:10:05ZWhat exactly is it that defines an animal? Here's a slideshow of the eight main animal characteristics, ranging from multicellularity to sexual reproduction.
2016-10-21T11:10:05ZFlatworms are a group of invertebrates that includes planarians, tapeworms, and flukes. Flatworms include both free-living and parasitic species.
2016-10-21T11:10:05ZAll living organisms can be sorted into one of two groups depending on the fundamental structure of their cells - prokaryotes or eukaryotes.
2016-10-21T11:10:05ZWith 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.
2016-10-21T11:10:05ZThe vast majority of animals on earth are invertebrates—animals that lack backbones and internal skeletons. Here are 10 invertebrate facts everyone should know.
2016-10-21T11:10:05ZThe world's oceans, lakes, and rivers harbor tens of thousands of fish species. Here are 10 essential facts about fish that everyone should know.
2016-10-21T11:10:05ZAn A to Z list of animal profiles available at this site, sorted alphabetically by scientific name.
2016-10-21T11:10:05ZExplore the basic characteristics that are shared by all reptiles—from snakes and lizards to crocodiles and turtles.
2016-10-21T11:10:05ZThey're nowhere near as common as they were 100 million years ago, but reptiles are still some of the most distinctive animals on earth.
2016-10-21T11:10:05ZThe 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.
2016-10-21T11:10:05ZExplore the nitty gritty of population biology, a fascinating branch of zoology that investigates the ways in which populations change over time.
2016-10-21T11:10:05ZReptiles are a group of vertebrates that colonized terrestrial habitats more extensively than their amphibian ancestors.
2016-10-21T11:10:05ZGreat horned owls are a large species of true owls that inhabits many parts of North and South America.
2016-10-21T11:10:05ZThe most recognized image of a jellyfish is that of the adult jellyfish, with its bell-shaped body and long tentacles.
2016-10-21T11:10:05ZFrom leaves and grasses to fish and crustaceans, the diet of today's turtles is really quite varied.
2016-10-21T11:10:05ZExplore the vast diversity of animal life, from arrow worms to waterbears, and discover how these remarkable organisms differ from all other living things.
2016-10-21T11:10:05ZWith their long necks, richly patterned coats and stubby ossicones, Giraffes are among the most recognizable animals on earth. Here are 10 essential Giraffe facts.
2016-10-21T11:10:05ZBoost your understanding of mollusks, a group of invertebrates known for their remarkable diversity—in both sheer number of species as well as variety of form.
2016-10-21T11:10:05ZJellyfish are a group of carnivorous cnidarians with a bell-shaped body and tentacles. Jellyfish are delicate, soft-bodied animals.
2016-10-21T11:10:05ZAre 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).
2016-10-21T11:10:05ZArthropods--which include insects, spiders, and crustaceans--are by far the most common animals on earth. Here's a slideshow of 10 essential arthropod facts.
2016-10-21T11:10:05ZBarn 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.
2016-10-21T11:10:05ZAn introduction to the four basic groups of reptiles including crocodilians, lizards, snakes and turtles.
2016-10-21T11:10:05ZGet 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.
2016-10-21T11:10:05ZMollusks are a group of invertebrates that includes squids, octopuses, cuttlefishes, nudibranchs, snails, slugs, limpets, mussels, and many more.
2016-10-21T11:10:05ZLiving organisms face a constant barrage of external stresses or threats that challenge their ability to survive and reproduce.
2016-10-21T11:10:05ZWhat reptiles eat differs from species to species but here you'll find out about some of the general dietary trends for various reptiles.
2016-10-21T11:10:05ZDecode some of the jargon that is used in the science of ecology to describe natural communities, populations, and ecosystems.
2016-10-21T11:10:05ZThe aquatic biome consists of habitats around the world that are dominated by water, from tropical reefs, to brackish mangroves, to Arctic lakes.
2016-10-21T11:10:05ZA comprehensive list of the world's biggest mammals by type, ranging from whales to hedgehogs.
2016-10-21T11:10:05ZExpand your understanding of animals and learn some of the basics behind their biology as well as a handful of lesser-known animal facts.
2016-10-21T11:10:05ZProfile of the Appalachian Mountain Range, an ancient band of mountains that stretches in a southwestern arc from Newfoundland to Alabama.
2016-10-21T11:10:05ZDiscover how the innovation of a supportive backbone enabled the vertebrates to stand tall and go beyond their chordate ancestors.
2016-10-21T11:10:05ZIt gets complicated when species share the same habitat. This guide will help you to untangle the many interactions that arise when species mingle.
2016-10-21T11:10:05ZLearn interesting facts about dolphins and find out about the characteristics make them different from other animal groups, their life cycle and their evolutionary history.
2016-10-21T11:10:05ZArthropods are a group of invertebrates that includes insects, spiders, crustaceans, scorpions, centipedes, and many others.
2016-10-21T11:10:05ZLearn interesting facts about marsupials and find out about the characteristics make them different from other animal groups, their life cycle and their evolutionary history.
2016-10-21T11:10:05ZAn A to Z list of animal profiles available in The Animal Encyclopedia, sorted alphabetically by common name.
2016-10-21T11:10:05ZThe 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.
2016-10-21T11:10:05ZCanids are long-legged carnivores that include wolves, coyotes, jackals, foxes, wild dogs and domestic dogs.
2016-10-21T11:10:05ZMammals are a group of tetrapods that includes bats, carnivores, cetaceans, elephants, hoofed mammals, primates, monotremes, marsupials, and rodents.
2016-10-21T11:10:05ZSnowy owls are large owls with white plumage and their extreme northerly range which includes tundra habitat throughout Alaska, Canada and Eurasia.
2016-10-21T11:10:05ZTo maintain correct body temperature, mammals must conserve body heat in cold conditions and dissipate extra body heat in warmer conditions.
2016-10-21T11:10:05ZSexual dimorphism is the difference in form between male and female members of the same species.
2016-10-21T11:10:05ZSquamates are a group of reptiles that sheds their skin periodically in patches and have uniquely jointed skulls and jaws.
2016-10-21T11:10:05ZDescent with modification refers to the passing on of traits from parent organisms to their offspring.
2016-10-21T11:10:05ZMyriapods are a group of arthropods that includes millipedes, centipedes, pauropods, and symphylans. Myriapods are noted for their having many legs.
2016-10-21T11:10:05ZScientists have identified nearly one million living species of invertebrates, but this is only a small fraction of the invertebrates alive today.
2016-10-21T11:10:05ZZoology 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.
2016-10-21T11:10:05ZFind out how scientists estimate and count the many millions of animal species that live on our planet today.
2016-10-21T11:10:05ZAmphibians are the most ancient of all tetrapod lineages and the first to have climbed onto dry land some 370 million years ago.
2016-10-21T11:10:05ZAn overview of vertebrate evolution that explores the key developments in the evolution of mammals, birds, reptiles, amphibians, and fish.
2016-10-21T11:10:05ZAn introduction to the basic fish groups including bony fishes and cartilaginous fishes.
2016-10-21T11:10:05ZDecode the secrets of amphibian classification in this beginner's guide to the three basic amphibian groups.
2016-10-21T11:10:05ZA list of animals of the Amazon River basin in South America including harpy eagles, three-toed sloths, toucans, and more.
2016-10-21T11:10:05ZHabitat destruction is fueled by a fast-growing human population. As human populations increase, we use more land for agriculture, cities, and towns.
2016-10-21T11:10:05ZGain an intimate view of the social lives of lions, the only species of cat that hangs out in groups called prides.
2016-10-21T11:10:05ZTemperate forests evolved 65 million years ago when global temperatures dropped and, in areas further from the equator, cooler climates emerged.
2016-10-21T11:10:05ZCetaceans are highly specialized mammals with numerous adaptations that make them well-suited for living in water.
2016-10-21T11:10:05ZThe Rocky Mountains stretch through western North America from Alaska to New Mexico, forming the middle section of the Western Cordillera.
2016-10-21T11:10:05ZDespite their name, gray wolves are colorful canines. Their coat color ranges from white to gray to black and is regulated by complex genetic factors.
2016-10-21T11:10:05ZDiscover the remarkable ways that animals are shaped by the natural environment in which they live.
2016-10-21T11:10:05ZSponges are a group of simple aquatic invertebrates that include glass sponges, demisponges, and calcareous sponges.
2016-10-21T11:10:05ZEchinoderms are a group of marine invertebrates that includes star fish, sea lilies, feather stars, brittle stars, sea cucumbers and sea urchins.
2016-10-21T11:10:05ZSegmented worms are bilaterally symmetrical invertebrates that include more than 12,000 species such as earthworms, ragworms and leeches.
2016-10-21T11:10:05ZDefinition of Camouflage and how it helps animals.
2016-10-21T11:10:05ZDiscover 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.
2016-10-21T11:10:05ZThe Great Lakes is a chain of five large, freshwater lakes that are located in central North America astride the Canada-Unisted States border.
2016-10-21T11:10:05ZThe Arctic National Wildlife Refuge is located within the arctic circle, in the northeast corner of Alaska.
2016-10-21T11:10:05ZDefinition of a niche, a term used to describe the role an organism or population plays within its community or ecosystem.
2016-10-21T11:10:05ZLearn about corals and find out about their diversity, evolutionary history and the characteristics make them different from other invertebrate groups.
2016-10-21T11:10:05ZThe American black bear is a large carnivore that inhabits the forests, swamps, tundra throughout the more northerly reaches of North America.
2016-10-21T11:10:05ZThe desert biome covers one-fifth of the earth's surface and includes habitats that receive very little rainfall each year.
2016-10-21T11:10:05ZFacts about zebras, a group of equids with a distinct black and white striping pattern.
2016-10-21T11:10:05ZBiomes are large regions of the earth that share similar characteristics such as climate, soils, precipitation, plants, and animals.
2016-10-21T11:10:05ZVipers are a group of snakes that include true vipers, bush vipers, rattlesnakes, pit vipers, adders and night adders.
2016-10-21T11:10:05ZFrom feathers to furculas, birds are some of the most distinct vertebrates alive today, exhibiting a remarkable suite of adaptations for their aerial lifestyle.
2016-10-21T11:10:05ZAn introduction to the seven basic groups of carnivores including bears, canids, cats, civets, hyenas and aardwolf, mustelids, and raccoons.
2016-10-21T11:10:05ZNew World Monkeys are a group of primates endemic to Central and South America. New world monkeys include marmosets, tamarins, capuchins, squirrel monkeys, and many others.
2016-10-21T11:10:05ZThe grassland biome is a terrestrial biome with a vegetation structure that is dominated by grasses and that is largely void of trees or shrubs.
2016-10-21T11:10:05ZWhen tetrapods arrived on the evolutionary stage, the world was forever changed. Find out how these unique vertebrates paved the way for life on land.
2016-10-21T11:10:05ZTo understand animals and their biology, it helps to understand the cells, tissues, organs and organ systems that comprise them.
2016-10-21T11:10:05ZMature forests often have several distinct layers including the forest floor, herb layer, shrub layer, understory, canopy, and emergents.
2016-10-21T11:10:05ZCnidarians are a group of aquatic invertebrates that includes jellyfish, corals, sea anemones and hydras.