Not as terrified as I was when one of our dogs got hemangiosarcoma, a canine-only cancer of the cells that line the inside of blood vessels. It took three weeks

Not as terrified as I was when one of our dogs got hemangiosarcoma, a canine-only cancer of the cells that line the inside of blood vessels. It took three weeks from the first symptoms to when he died. That's actually a long time - in many cases, the first symptom of the cancer is that the dog is dead.