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 ...

The energy invested in animal reproduction is as much as 10 times greater than previously estimated when the metabolic load of bearing and caring for offspring is accounted for, according to a new ...

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