Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Bedbugs ?
    ### Response:
    Bedbugs bite you and feed on your blood. You may have no reaction to the bites, or you may have small marks or itching. Severe allergic reactions are rare. Bedbugs don't transmit or spread diseases.    Adult bedbugs are brown, 1/4 to 3/8 inch long, and have a flat, oval-shaped body.
    