From the Centers for Disease Control and Prevention:
What are bed bugs?
“Bed bugs (Cimex lectularius) are small, flat, parasitic insects that feed solely on the blood of people and animals while they sleep. Bed bugs are reddish-brown in color, wingless, range from 1mm to 7 mm (roughly the size of Lincoln’s head on a penny), and can live several months without a blood meal.”
Please click here to visit the CDC’s Bed Bugs Frequently Asked Questions.