studies insects

It’s not nice having bugs in your bed. More so if they're capable of sucking your blood and leaving you with a lot of diseases. But that's exactly what the bedbug does unless you know how to control it.
Bedbugs are small, wingless insects that are found throughout the world. Their bodies are covered with fine short hair and they emit a foul odor when disturbed which is enough to keep people away from them.
For the most part, however, bedbugs are the ones that disturb man. At daytime, you won't see them. But at night, they're out for blood - human or otherwise.
"The bedbug is nocturnal, meaning that it feeds at night, usually on sleeping victims. It takes five to 10 minutes to suck a full blood meal. During the day, they avoid the light and hide in mattresses, cracks in the walls and floors, in furniture or behind wall posters," according to the editors of “Health Alert”, a publication of the Health Action Information Network (HAIN).