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Animal body lengths range from 8.5 μm (0.00033 in) to 33.6 m (110 ft). They have complex ecologies and interactions with each other and their environments, forming intricate food webs.

Learn about some of nature’s most incredible species through recent discoveries and groundbreaking studies on animal habitats, behaviors, and unique adaptations.

Mar 28, 2026 · 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).

Welcome to Animalia, an online animal encyclopedia where you can learn about all your favourite animals, and even some you may have never heard of.

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 …

Each of our animal facts pages covers a range of topics about that animal, including their diet, habitat, breeding patterns, their physical characteristics, unique personality traits and behaviors and much …

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Explore the animal kingdom through pictures, videos, facts, and more from our animal profiles on fish, birds, reptiles, mammals, amphibians, and invertebrates.

Mar 28, 2026 · To stay alive, grow, and reproduce, an animal must find food, water, and oxygen, and it must eliminate the waste products of metabolism. The organ systems typical of all but the simplest of …