The word animal comes from the Latin noun animal of the same meaning, which is itself derived from Latin animalis 'having breath or soul'. [5] The biological definition includes all members of the kingdom Animalia. [6] In colloquial usage, the term animal is often used to refer only to nonhuman animals. [7][8][9][10] The term metazoa is derived from Ancient Greek μετα meta 'after' (in ...
Animal, any of a group of multicellular eukaryotic organisms thought to have evolved independently from the unicellular eukaryotes. Animals differ from other multicellular eukaryotes, the plants and the fungi, in morphology and physiology in that animals evolved muscles, which allow them to be mobile.
Discover the weirdest and most wonderful creatures to ever roam Earth with the latest animal news, features and articles from Live Science.
Explore the animal kingdom through pictures, videos, facts, and more from our animal profiles on fish, birds, reptiles, mammals, amphibians, and invertebrates.