Male Rivalry Increases when Females at Most Fertile, Say Researchers

Men become more jealous of dominant males when their female partner is near ovulation, researchers at the University of Liverpool have found.

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<p><a href="http://www.physorg.com/news65104560.html">Male Rivalry Increases when Females at Most Fertile, Say Researchers</a></p> <p>Men become more jealous of dominant males when their female partner is near ovulation, researchers at the University of Liverpool have found.</p>