Hard bumps on my puppy's lips -- Pavavirus? Cancer?

First of all, thank you all for your welcome and for your very informative responses.  I did take Xica to the vet (she had an appointment on Saturday to have her last booster shot... parvovirus, I think), so the timing was perfect to have the vet look at her bumps.

I mentioned acne and she said that could be it at first, but then took a second look and said she thought it was folliculitis, which is also not serious, thank God.  She said she could prescribe an antibiotic, but she wanted to hold off on that and see if things got better with twice daily cleanings with soapy water or diluted peroxcide and then an application of hydrocortizone or Neosporin.  I started this "treatment" yesterday, so I will come back and report later once I see the results.

It's funny that you should mention about her bowls, because the doctor asked me too.  She said not to use plastic and, although she recommended stainless steel, she said ceramic (the ones I'm using) should be fine.  I will take gr8dame's advise and clean it thoroughly every day.

gr8dame, I found the story of your dane and the peroxcide bottle quite funny and, since you wanted to see a more flattering photo of Xica, there she is in my profile photo as a 2 month-old puppy, sitting on the window, freaked out by of the camera.  The ones below are more recent ones. 

Once again, thanks a lot! 

My 10 month old Dane has those same exact spots under her chin!! Bless her heart!! I'm happy to know it's not anything to worry about! Thanks!!!