Fact sheet about these small insects that "prefer to feed on human blood, although they may bite other warm-blooded animals, including pets. During the day, bedbugs hide in bedclothes, mattresses, springs, bed frames and cracks and crevices near the bed. They use heat-seeking thermoreceptors to find their sleeping victims at night." Includes images and information about habits, prevention, and management. From the University of Nebraska Cooperative Extension in Lancaster County.