Social behaviour is any action directed by an individual towards a member of its own species. It includes both competitive behaviour, such as fighting, threat and submission, and co-operative interactions such as parental care and mating. All mammals show social behaviour, however infrequent their contact with other members of their own species, because internal fertilization necessitates mating and lactation involves an intimate relationship between mother and unweaned young.
KeywordsParental Care Ground Squirrel Inclusive Fitness Altruistic Behaviour Reciprocal Altruism
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