Among Tanzanian chimpanzees, the mothers of sons are about 25 percent more social than the mothers of daughters, found in a study of nearly four decades of observational data. Boy moms were found to spend about two hours more per day with other chimpanzees than the girl moms did. Chimpanzees have a male-dominated society in which rank is a constant struggle and females with infants might face physical violence and even infanticide. It would be safer in general to ...
via Medindia Health News
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