OK, thanks for that info.
This is a hard one to diagnose without seeing your dog, but I can give you a few ideas.
These bumps may be a mild folliculitis which is an infection in the hair follicles. If this is the case they may clear up on their own or they may go on to be red and irritated and need antibiotics.
I wondered at first if you were seeing viral warts, but I don't think that is what you are describing. They look like this:
We do sometimes see just regular warts that pop up as well.
There really aren't any other conditions I can think of that would cause these symptoms. However, if you would like to post a picture I can give you directions on how to do that and I can see if I can help you more.
I hope this information helps! If you have more questions regarding this problem, just hit reply. If I am online I will respond right away. Otherwise I will respond as soon as I come online again. Or, if my answer is sufficient, then please hit accept. Thanks!
The above is given for information only. Although I am a licensed veterinarian, I cannot legally prescribe medicines or diagnose your pet's condition without performing a physical exam. If you have concerns about your pet I would highly advise contacting your regular veterinarian.