Oral Melanoma in Dogs: Welfare and Palliative Care

Key Facts

• Oral melanoma accounts for approximately 30-40% of all canine oral tumors
• Local tissue destruction causes pain, difficulty eating, halitosis, and bleeding from the mouth
• Surgical resection provides local control but metastasis to lymph nodes and lungs is common
• Melanoma vaccine (USDA-approved) extends survival in dogs with completely resected disease
• Palliative radiation therapy provides meaningful pain relief and local control when surgery is not feasible

Welfare Considerations

Oral melanoma causes progressive welfare suffering through local tissue destruction. Affected dogs have difficulty eating, dropping food, showing pain on mouth opening, and developing halitosis from tumor necrosis. The treatment decision — surgery, radiation, vaccine, or palliative care — should be guided by welfare considerations alongside owner capacity. Post-surgical welfare can be excellent for dogs with successful mandibulectomy, many of whom adapt quickly and eat normally. Palliative care with NSAIDs and soft food maintains quality of life when curative-intent treatment is declined.

What You Can Do

• Seek veterinary oncology assessment promptly for any oral mass — early staging guides treatment options
• Discuss all treatment options openly including palliative care as a valid welfare choice
• Transition to soft, easily chewed food to maintain adequate nutrition during and after treatment
• Administer NSAIDs as directed for pain control — oral melanoma causes significant mouth pain
• Monitor quality of life monthly using a validated scale to guide end-of-life timing decisions