Kinky spiders tie up partners during intercourse. By Mindy Weisberger

Tying up your companion is just one option to introduce a small excitement to the bed room. But also for male nursery-web spiders, bondage during mating can be a matter of life and death. A new study finds by restraining their partners, male spiders reduce their chances of falling victim to sexual cannibalism. Nursery internet spiders (Pisaurina mira) are long-limbed hunters that catch and overpower their victim. Although the females' figures could be a little…