Bed bugs are oval, chestnut-brown insects and are flattened from top to bottom. All members of the bed bug family feed on the blood of birds or mammals. Bed bugs are active only at night, usually just before dawn. During the day, they hide in cracks and crevices in walls, floors, beds, and furniture. When only a few bed bugs are present, they live close to human sleeping areas; when numerous, they can be found in many rooms of the house. Check the seams of mattresses, curtains and furniture (wood and fabric both) as common hiding spots. Bed Bugs spread easily and must be treated by a professional. For a great overview of identification visit the EPA’s website.