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Animals in the sense of modern systematics that only covers a group of multicellular (multicellular) and held in a different function (network), so that the group also called histozoa.
Animals also called the beast is a group of organisms that are classified in the kingdom Animalia or metazoans, is one of many living creatures on earth. Other designations are fauna and wildlife (or any animal).
All the animals are heterotrophic, meaning not create its own energy, but must take from the surrounding environment.