Over 1.5 million living animal species have been described, of which around 1.05 million are insects, over 85,000 are molluscs, and around 65,000 are vertebrates. It has been estimated there are as many as 7.77 million animal species on Earth.

Mar 21, 2025 · animal, (kingdom Animalia), any of a group of multicellular eukaryotic organisms (i.e., as distinct from bacteria, their deoxyribonucleic acid, or DNA, is contained in a membrane-bound nucleus). They are thought to have evolved independently from the unicellular eukaryotes.

That’s why we are building the world’s greatest animal encyclopedia, completely free to you. Please take a moment to learn more about animals today using these helpful guides and resources: Reference Library – See helpful information on conservation, classification, animal evolution, and more

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May 26, 2023 · An animal is a complex, multicellular organism that belongs to the biological kingdom Animalia – the animal kingdom. Animals range from relatively simple organisms such as sponges and jellyfish to complex ones such as humans and elephants.

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An animal such as a cat or dog can be seen to breathe. Plants breathe too, by taking in certain gases from the atmosphere and releasing others. However, this process cannot be observed by the naked eye.

Explore the exciting animal kingdom to know about different species of mammals, insects, amphibians and reptiles. Resource includes a great selection of pictures, facts, news, general information and more on animals.

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