Those look kinda like the ones I have. My mommy took me to the vet the other day and he said I had allergies. The vet gave my mommy some fatty acids topical gel and supplements of omega fatty acids for my food. I'm still trying to see if they improve.
I took Leo to the vet and explained my concerned with this bumps he has... the vet said it was allergies so he gave me some fatty acids topical gel. The bumps have gotten worst and i dont know if to get worried or what.