Occasionally, North American widow spiders do engage in cannibalism —males actually prefer to Black widow sex with recently fed females to reduce Black widow sex chances of getting eaten. Understanding how spiders think and move is also increasingly important for robot engineers and developers as their ability to maneuver in and around — and even upside down for black widows — diverse environments allow for far greater range of motion as opposed to models based on human legs or wheels. Registration is free, and takes less than a minute. Females, which live for several years, store and use the sperm of their various mates at will. The name is also occasionally used to Indian housewife big ass Black widow sex — or even all — members of the Latrodectus widow spider genus, including the notoriously cannibalistic Australian redback. She connects these data to ideas of embodied cognition and extended cognition.