Bed bug

Found exclusively indoors, primarily in mattresses, box springs, and cracks near human sleeping areas.

Obligate hematophagous ectoparasites feeding exclusively on the blood of humans and other warm-blooded animals.

Nocturnal and highly secretive, hiding in dark crevices during the day and emerging at night to feed.

Bites cause localized skin irritation, allergic reactions, and severe psychological distress; they provide no ecological benefit to humans.