I am clueless! I've looked at pictures of fleas, bed bugs, drain flies, fruit flies, lice, basically everything mentioned. These look smaller and lighter in color. I've squashed them and they don't seem to leave any color. I've never found the bugs on me, or even Bailey for that matter. I just link them to Bailey because they've been around since I got her and they seem to be in the areas where she is.
I've never given her anything for fleas, but wouldn't she be really itchy and have flea dirt on her if she had fleas?
Also, I have pest control. The guy comes quarterly to spray outside and also sprays in the walls. The last time he was here was about a month ago, so these tiny little bugs seem like that stuff doesn't affect them.