Bed Bug

Human dwellings, specifically in bed frames, mattresses, cracks, and crevices near sleeping areas.

Obligate hematophagous; primarily feeds on human blood, but will feed on other warm-blooded animals if humans are unavailable.

Nocturnal parasites that hide during the day and emerge at night to feed. They detect hosts via body heat and carbon dioxide and can survive several months without a blood meal.

No known disease transmission, but bites cause itching, allergic reactions, and significant psychological distress. They are considered a major urban pest and difficult to eradicate.