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.
How many of us have seen, much to its owner consternation, a misguided pet urinating at the corner of a room marking its territory to repel rivals and attract females? Well, apparently fish do the same.
Unequal sharing of workloads in societies could leave the most industrious individuals at higher risk of poor health and prone to accelerated ageing, according to a new study of a cooperative bird in the Kalahari Desert.
The darker side of meerkats – which sees them prevent their daughters from breeding, and kill their grandchildren – is explained in a new study.
Some mammals may have evolved to synchronise births as a way of evading the threat of infanticide, according to a study led by the University of Exeter.