Human: Who invented the bed bug? Assistant: 
Bed bugs are a species of parasitic insects that feed on human blood. They are a nuisance pest that can be found in hotels, apartments, and other places where people sleep. The first bed bug was discovered in the 17th century, but it wasn’t until the 19th century that they became a major problem. Bed bugs were first brought to the United States by European immigrants, and they have since spread to many other countries.