A oral tumor, also referred to as masses, growths, epulides, cancer or neoplasms, lump and bump is an abnormal growth of tissues that deveoped inside the mouth of dogs. They can occur on the gums, tongue, roof of the mouth (hard and soft palates) and/or back of the throat. Benign oral tumors typically grow slowly by expansion, displacing normal tissue but not invading it. They usually are encapsulated and well-defined. Benign masses are not metastatic; they don’t form secondary tumors in other locations. On the other hand, malignant tumors usually worsen with time and, if not successfully treated, cause serious illness and eventual death.