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