Men more jealous of dominant males when female partner is ovulating

New research shows that men are more jealous of dominant men when their female partners are ovulating. Interestingly, females find more dominant males more attractive while they are ovulating (and are therefore most fertile). According to the researchers, " ... in humans, rated dominance increases when the female is most fertile. What is interesting here is that male behaviour is determined by that of the females; men become more wary of masculine-looking men only when the female's facial preferences begin to shift prior to ovulation." Link: http://www.medicalnewstoday.com/medicalnews.php?newsid=42201&nfid=rssfeeds