Male dominance is frequently assumed to be the norm in the animal kingdom and has been a significant matter of reform in modern human society. Yet other species, some well-known and others obscure, with extremely intricate social arrangements or perplexing life histories may astound us with their incredible characteristics of female domination within the species. We take a tour of some highly gender role biased species where the female takes the upper hand, sometimes putting males at a disadvantage, and sometimes simply being the greater predator or literally the sole bloodthirsty one out of the two genders in a species.
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