Heinsohn, Robert; Langmore, Naomi; Cockburn, Andrew; Kokko, Hanna
Infanticide is easiest to understand when it involves killing the offspring of others , but a parent may also kill its own offspring if the sacrifice of currently dependent young leads to higher survival of brood mates  or an improvement in the parent's likely future reproduction . However, sex-specific infanticide by parents of their own offspring, although occurring in some human societies , is rare across species. Its rarity may be because killing one sex combines wasted parental...[Show more]
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