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  2. Oct 22, 2023 · Find your favorite animals from A to Z on this comprehensive and thoroughly researched animal resource. Browse thousands of domesticated and wild animal lists with photos, facts, and videos.

    • African Civet

      Small animals such as frogs, rodents, lizards, and snakes...

    • African Jacana

      View all 194 animals that start with A. Share on: How to Add...

    • Amazon Tree Boa

      These snakes fall prey to other carnivores; birds of prey...

    • Amargasaurus

      Similar Animals to The Amargasaurus. Other Sauropods related...

  3. Explore the fascinating world of animals with National Geographic. Read stories, see photos, and learn about the latest discoveries and conservation efforts for various species.

  4. en.wikipedia.org › wiki › AnimalAnimal - Wikipedia

    Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, have myocytes and are able to move, can reproduce sexually, and grow from a hollow sphere of cells, the blastula, during embryonic development.

  5. Explore amazing facts, photos, and videos of your favorite animals with National Geographic Kids. Join the fun and learn more about the natural world.

    • Overview
    • The animal kingdom

    Animals are multicellular eukaryotes whose cells are bound together by collagen. Animals dominate human conceptions of life on Earth because of their size, diversity, abundance, and mobility. The presence of muscles and mobility is one of the primary characteristics of the animal kingdom.

    What are the two major groups of animals?

    The two major groups of animals are vertebrates and invertebrates. Vertebrates have backbones, and invertebrates do not.

    When did animals first appear?

    Animals first appeared in the Ediacaran Period, about 635 million to 541 million years ago, as soft-bodied forms that left traces of their bodies in shallow-water sediments.

    What are the basic functional systems of animals?

    Animals evolved from unicellular eukaryotes. The presence of a nuclear membrane in eukaryotes permits separation of the two phases of protein synthesis: transcription (copying) of deoxyribonucleic acid (DNA) in the nucleus and translation (decoding) of the message into protein in the cytoplasm. Compared to the structure of the bacterial cell, this ...

  6. Animals. Animal Pictures and Facts. Learn all you wanted to know about animals with pictures, videos, facts, news, and more. Composite photograph by Joel Sartore, National Geographic Photo...

  7. May 26, 2023 · Scroll down (or click the image above) to see a complete guide to animals and the animal kingdom. Find out: what makes an animal an animal; how animals are classified; invertebrates vs vertebrates, and the major types of animals. Animals: A Complete Guide.

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