The purpose of this brief biology lesson is to make you a bit wiser about bed-bug behavior. The first thing we should talk about is that you are their food source. They feed on blood anywhere from three to twelve minutes one to three times per week. They prefer human blood, but they’re opportunistic and will feed off a dog, a cat, a mouse, or a hamster. Females lay two to three eggs per day—they are egg-laying machines. Those hatch in seven to ten days. They have five nymph stages and are adults in one to two months, as long as they have a food source. Their average life span is six months to a year and a half. They can live a long time without feeding, some as long as six to twelve months. Bed bugs are cryptic and spend most of their time hiding in cracks and crevices waiting for their food to return, you.