My 8 yo golden retriever went for a teeth cleaning last week. They noticed a small mass on her lower gum that we never noticed and did an excision. Found out today that it was a really aggressive melanoma. The vet called today and said that she has 3-6 months to live. We have a goals of care visit planned for next week and I can’t believe it. She is totally normal right now, but I guess based on the histology it was a really aggressive cancer that they think has already metastasized. Heartbroken and can’t believe it