If the bug on your bed is shiny, oval-shaped, and roughly the shape of a flea, it's likely a spider beetle. Spider beetles have longer legs and antennae than bed bugs do, and are harmless to humans. If your suspect is black with a large winged shell, it's probably a carpet beetle. These are scavengers that feed on wool, leather, and hair.
But a bed bug itself was not there. When I checked the boxspring, that's when we found a culprit - 1 very large bed bug sitting right on the underside lip of the boxspring - in full view once the boxspring was turned over. The customer could see that it was a large bed bug full of blood, and I found it exactly where the dog had alerted.
If you can't find any bed bugs but you think you have an infestation, check for bite marks around your feet or ankles. Look for yellow egg shells and clear case skins near your mattress edges, and try to spot blood spots or dark fecal matter on your sheets or headboard.
The bugs or the dark spots of their excrement are visible during an infestation. Adult bedbugs are flat, oval bugs about 1/4 inch long. If the bed has bedbugs, the pests are also likely going to be found in furniture and other places throughout the home.
If you think you have found a bed bug, try to catch it on a piece of tape or put it in a plastic bag, you can then have this bug identified by a pest management professional (exterminator) in your area.
Chances are, you have located the bed bug in or near your bed. By performing a few initial steps, you will make it easier for a comprehensive inspection. If found elsewhere in the house, there may be a larger infestation and you should contact a professional to schedule an inspection immediately.