Some animals reproduce only once before dying. This life strategy, called semelparity, sees organisms channel all energy into ...

In the animal kingdom, mating isn’t always about survival. From praying mantises to octopuses, some species die during or ...

A large-scale analysis of 117 mammal species found that preventing reproduction is associated with longer lifespans, suggesting a strong link between reproductive activity and life expectancy. Why do ...

Animals that can change their sex naturally might sound surprising at first, but in nature, it is simply another survival ...