Researchers have discovered why some female lemurs have abandoned their bullying ways

Lemurs are among the animal world’s most notable female bullies, often smacking, biting and chasing males to get their way.

In most lemur societies, females reign supreme through physical intimidation.

But within one branch of the lemur family tree, certain species have evolved more peaceful social structures where males and females share relatively equal status.

The findings could have implications for understanding aggression in other species, including humans.