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My dog has several types of bumps, so I understand your concern. Soft bumps can be clogged oil glands, sebaceous cysts, or benign fatty tumors. The vet told us not to worry about any of these. You should see a vet to rule out cancer.
it is usually called a *cist* by the medical community. it is best to have a doctor check it out so they can see if it is cancerous or not. all cists have that possibility. but it is most likely...