A ten-year-old, intact male, Labrador Retriever was presented to the Cornell University Hospital for Animals' Oncology Service for evaluation of a recurrent oral amelanotic melanoma. This lesion was first noticed by his owners in early March on the right buccal mucosa. The mass had been previously excised by the primary veterinarian. Histology revealed an incompletely excised amelanotic melanoma with a mitotic index of 52 per l0HPF. Staging at CUHA revealed no evidence of metastasis so computed tomographic imaging of the head was performed for surgical planning. A surgical scar revision was performed, along with removal of both mandibular lymph nodes. Samples from the surgical margins were submitted for intraoperative cryosections which revealed clean margins. The mucosa was reconstructed with local mucosa! flaps. At a recheck appointment with the Oncology Service two months following the scar revision, the patient had repeat thoracic radiographs taken and revealed a possible pulmonary nodule, which was later determined to be summation of normal tissue. Three and a half months after the surgical scar revision, the patient presented to the Emergency Service for progressive hind-end weakness and a two day history of inappetance and inability to stand. Imaging revealed evidence of metastasis in the liver and, given a poor prognosis, euthanasia was elected. This report will discuss oral amelanotic melanoma in dogs, common clinical presentations, diagnostics, and potential treatment options for the disease.