My senior min pin has teeny, tiny bugs crawling on her stomach and around her privates!! They are NOT fleas, bedbugs, or lice.

They are fast-moving and are about 1/4 the size of fleas...

They are only on her - not our other dogs and not in her bedding, etc...

I bathed her and within a few hours they were back - HELP!!

Sounds a lot like skin mites. Time for a trip to the vet to confirm it. Sarcoptic mites are responsible for (da da DUM) mange.

Yep, catsmine sounds right, it could very well be mites.

Time for a trip to the vet is you will need medication to get rid of them that you can't buy from a pet store.