DOGS · Condition guide
Melanoma in dogs: what real veterinary cases show
Melanoma in dogs is a type of cancer that originates from melanocytes, the cells responsible for pigment production. It can occur in various parts of the body, including the skin, mouth, and even the eyes. While it can affect any breed, certain breeds like Scottish Terriers and Schnauzers are more predisposed.
Owners often first notice a dark or pigmented lump, especially in the mouth or on the skin. Early detection is crucial as melanoma can be aggressive and spread to other parts of the body, making timely intervention important for the best outcome.
What vets typically check for
- Perform a thorough physical examination to identify any suspicious lumps.
- Conduct a biopsy of the lump to confirm the diagnosis of melanoma.
- Use imaging techniques like X-rays or ultrasounds to check for metastasis.
- Evaluate the dog's overall health to determine the best treatment plan.
- Consider surgical removal of the tumor, possibly followed by chemotherapy or radiation therapy.
Not a replacement for veterinary care. Use this to walk into the conversation prepared, not to self-diagnose.
Real cases from the veterinary literature
Peer-reviewed reports our semantic search surfaces for Canine melanoma. Click into any case for the full abstract — or run a personalised search with your pet's exact details.
- Surgical Margins Required for the Complete Excision of Canine Oral Melanomas
Veterinary and Comparative Oncology · 2026 · Australia
A study looked at how much tissue needs to be removed when treating oral malignant melanoma (OMM) in dogs, which is a common type of mouth cancer. Researchers found that removing a margin of 10-15 mm around the tumor significantly increased the chances of completely excising the cancer without leaving any behind. In fact, when the surgical margins were at least 10 mm, all dogs
- Well-Differentiated, Low-Grade Subcutaneous Liposarcoma With a Fatal Outcome in a Dog.
Veterinary medicine and science · 2026 · United States
A 10-year-old male Rottweiler was brought to the vet because of a large, fast-growing lump on his right front leg. The vet found that the mass was firm and raised, and tests showed it was a low-grade liposarcoma, which is a type of cancer. Unfortunately, the dog's owner chose not to pursue any treatment, and the dog passed away three months later, likely due to the cancer sprea
- Case Report: Endoscopic-guided electrochemotherapy combined with metronomic chemotherapy for the treatment of nasal tumors in dogs.
Frontiers in veterinary science · 2026 · Italy
Two dogs with nasal tumors that couldn't be treated with radiation underwent a new treatment called endoscopic-guided electrochemotherapy. This involved administering a cancer-fighting drug (bleomycin) and using electrical pulses to help it work better, along with additional medications to help manage their cancer. After three treatment sessions, both dogs showed a decrease in
- Recurrence Rates for Mandibular Fibrosarcoma Associated With Mandibular Canal Invasion Following Mandibulectomy Procedures in Dogs.
Veterinary and comparative oncology · 2026 · United States
A 7-year-old mixed-breed dog was treated for an aggressive oral tumor called fibrosarcoma, which had invaded the jawbone. After surgery to remove part of the jaw (mandibulectomy), the dog was monitored for nearly 500 days. Unfortunately, 8 dogs, including this one, experienced a return of the tumor, particularly those with initial invasion into the jaw canal. The study found th
- Case Report: Partial neurectomy and limb-sparing treatment for SOX-10 expressing epithelioid malignant nerve sheath tumour of the tibial nerve
Frontiers in Veterinary Science · 2026 · CH
An 8.5-year-old neutered male Dobermann was brought in because he couldn't put weight on his left back leg and was in severe pain when his hock was flexed. Imaging tests revealed a thickened segment of the left tibial nerve, indicating a rare type of tumor. The veterinarian performed a limb-sparing surgery to remove the tumor while preserving the leg's function. Remarkably, the
- Evaluation of Optical Coherence Tomography for Metastatic Lymph Node Identification in Canine Oral Malignant Melanoma.
Veterinary and comparative oncology · 2026 · United States
A group of 13 dogs with oral malignant melanoma (OMM) underwent surgery to remove their tumors and nearby lymph nodes. Researchers used a special imaging technique called optical coherence tomography (OCT) to help identify whether the lymph nodes had cancer spread. The OCT method showed a good ability to detect cancer in the lymph nodes, with about 75% accuracy in identifying m
Frequently asked questions
- What are the signs of melanoma in dogs?
- Signs include dark, pigmented lumps on the skin or in the mouth, swelling, and sometimes bleeding or ulceration.
- How is canine melanoma treated?
- Treatment often involves surgical removal of the tumor, and may include chemotherapy or radiation therapy to manage or prevent spread.
- Is melanoma in dogs curable?
- The prognosis depends on the stage and location of the melanoma, but early detection and treatment can improve outcomes significantly.