The dark giraffe, the new dark horse

Darker male giraffes have been found to be more solitary and less social than their lighter-colored counterparts, according to new research from The University of Queensland.

Pregnant gelada monkeys abort when new male enters group

(PhysOrg.com) -- Pregnant female geladas show an unusually high rate of miscarriage the day after the dominant male in their group is replaced by a new male, a new University of Michigan study indicates.

The secret of male beauty (in turkeys)

The essence of male beauty is down to the way males use their genes rather than what genes they have, according to a new study into the sexual attractiveness of turkeys.

Bonobos' unusual success story

Mate competition by males over females is common in many animal species. During mating season male testosterone levels rise, resulting in an increase in aggressive behavior and masculine features. Male bonobos, however, invest ...

How female hyaenas came to dominate males

In most animal societies, members of one sex dominate those of the other. Is this, as widely believed, an inevitable consequence of a disparity in strength and ferocity between males and females? Not necessarily. A new study ...

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