 If "Portia" cannot make further contact, all types of prey usually recover, making sluggish movements several minutes after the stabbing but often starting normal movement only after an hour.Spiders have a narrow gut that can only cope with liquid food, and have two sets of filters to keep solids out.Some spiders pump digestive enzymes from the midgut into the prey and then suck the liquified tissues of the prey into the gut, eventually leaving behind the empty husk of the prey.