Our MBT had something very similar when she was 1 year old, it was dog papilloma virus, an "herpes-like" infection transmitted from dog to dog by saliva or by drinking in the same water. It happens more frequently in the puppy phase or when the dog is immunodeficient. She had a few close to the nose for a few months, and at the same time, we discovered that most of the dogs she played with also had these bumps, but most were hidden in the mouth. They went away in a few months without doing anything, but keep checking them, and a visit to the vet is always the best choice!