Eusocial describes species with a very highly developed social structure. Ants and termites are all eusocial, as are some species of bee and wasp and a few very unusual mammals. Eusocial animals live in colonies in a strict caste system. The queen and her consort are the only members of the colony that breed and the majority of offspring become workers and soldiers who gather food, protect the colony and raise the young on the queen's behalf.

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