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The Southern Fur Seal (Arctocephalus australis) is a colonial breeding otariid species that ranges from the Atlantic coast of Uruguay and Argentina, around the Cape Horn, and north to the Pacific coast of Chile and Peru (Majluf, 1987). Harcourt (1992a) examined levels of female aggression at a Peruvian colony of A. australis, and found that it was several orders of magnitude higher than at any phocid colony, and significantly greater than in other otariid colonies.
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Marcelo H. Cassini (2001) studied this question.
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