Many mountain gorillas keep living - vigorous and socially engaged - for a decade or more beyond the years of reproduction.

Some male animals may evolve weak immune responses to transmit diseases. This is an Inside Science story. (Inside Science) -- In the battle of the sexes, sexually transmitted diseases may sometimes be ...

New research from the Max Planck Institute for Evolutionary Anthropology and the University of Turku reveals that female ...

Editor’s Note: The views expressed in this commentary are solely those of the writers. CNN is showcasing the work of The Conversation, a collaboration between journalists and academics to provide news ...

Nature is full of evolutionary selflessness. From deep-sea octopuses to certain marsupials, there are animals and insects that reproduce and then die, as their lives can be cut short because they ...

For decades, studying menstruation has posed a problem even the most sophisticated lab equipment couldn’t solve: most lab ...

A woman's fertility usually begins to decline in her mid-30s. This means the chances of becoming pregnant decreases ...

As a great queen once sang in 2011, “women run the world.” This is true even in the animal kingdom, where females often lead the group. From insects to apex predators, female-led species are strong, ...

What are some animals that give birth to huge numbers of offspring at once?” (Watch a female sea urchin produce millions of eggs.) The mola, or ocean sunfish, looks like an animal cracker someone bit ...

Dominant female meerkats' quest for dominance may be down to genes that give them the upper hand. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.