At this age, an oral mass that looks like this is most likely an epulis. Please refer to the article below about this type of oral tumor in dogs. Since some epuli, while not cancerous, can be destructive to underlying tissue, and given that such a lesion could also be consistent with a pocket of infection known as an abscess (commonly results from dental disease), a visit with the veterinarian is recommended. Malignant cancer would not be common in a dog this age, but occassionally happens. Malignant masses that occur in the mouth that can look like this include: fibrosarcoma, osteosarcoma, and unpigmented melanoma, so it would be wise to read the articles on these diseases as well. If you still seek further information, please visit our
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