You have it right. Insects, with the flexibility and resilience to be abandoned for this planet to occupy. Bed bugs are among them. This is the reason why they are off, touring hard. How do they see? When viewed from the top (by the way, you will not want to see them from another angle, surely), the bed bug looks like a flat-dwellers. They are so small that one can not see and see them, unless they are aided by magnifying glasses or lenses. Bed bugs usually appear as small dark brown creature. In other parts of the world, like Europe, bed bugs can otherwise appear --- they can retrieve, white to creamy white color. When they are eating, or just come from food, bed bugs look like small puffy creature with a small mass in black or red on their bellies.
This is mainly because of bed bugs eat the blood of the host '. Blood is the reason why their lives. If not, they certainly will not survive. How do they do? Do you really need to know this? Well, for your information, bed bugs have small bills, and less similar to that of mosquitoes. They use the bill to pass through the skin of their hosts. After that, when skin is pierced, they start enjoying and sucking blood. Because bed bugs are so small they could barely more than a quarter of sucking your milliliter. This means that you lose blood when bitten by a bus of the bed will be very negligible, you will not care at all. One good thing, bed bugs proved to be carrying or disease such as their relatives all over, like a mosquito.