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

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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 ...

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

Life cycles require the creation of an autonomous individual, that individual’s growth and that individual’s reproduction In ...

Nature is full of evolutionary selflessness. From deep-sea octopuses to certain marsupials, there are animals and insects ...

Reproduction is a normal part of life, and while sex might seem like a quick and straightforward process for humans, that’s not always the case in the animal kingdom. Some animals reproduce in rougher ...

Among mammals, females generally live longer. The recent comparative study examined 528 mammal species in zoos and found that 72% showed a female life expectancy advantage, averaging 12% longer lives ...

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