In order to mate, a male long-jawed orb weaver spider has to hook his huge jaws into those of a larger female. If he doesn’t get it right, he could become her next meal.

They embrace. And things get intimate. A couple of weeks after mating, the female jumping spider lays 50-200 eggs inside her cozy nest. She spins a protective silk sac around them ...

turning each mating attempt into fierce competition among males. If the female isn’t impressed, things can turn deadly. Female jumping spiders are notoriously ruthless and may eat the male if he ...