A U of T Scarborough study finds that a unique ritual performed by male ring-tailed lemurs may come at a significant physical cost, but it could help their chances in securing a mate.
Mongoose mothers boost their pups' survival chances by evicting rival females from their social groups, new research shows.
Dominant female meerkats use aggression to keep subordinates from breeding, but a new study finds this negative behavior also can result in the latter becoming less willing to help within the group.
Within a group of meerkats, call patterns vary with factors including sex, rank and reproductive season—but not with stress hormones, according to a study published May 3, 2017 in the open-access journal PLOS ONE by Jelena ...
Okayama University researchers confirm the role of mate-guarding in males for blocking the female's visual familiarity with rival males to improve mating success in a medaka fish model.
Testosterone. It's often lauded as the hormone that makes males bigger, bolder, stronger.
Meerkats live in groups of up to 50 individuals, yet a single dominant pair will almost completely monopolise reproduction, while subordinates help to raise offspring through feeding and babysitting. Since only a small minority ...
A school of 10 whales that washed up Monday in northern France may have done so voluntarily after the death of the dominant male, an expert said.
Lemur girls behave more like the guys, thanks to a little testosterone, according to a new study.
Previous research has shown that infanticide by males is widespread in many mammal species, but most commonly occurs in those species where females live in social groups dominated by one or a few males.