Just wondered if any vets around, or anyone who have had dogs with similar lumps. Large labrador cross dog, 3 years old, has a lump, about an 3 cm in diameter, on her back, on the left side. She doesn't like us touching it. I took her to the vet who told me just to keep an eye on it, and there was nothing they could do even if it was cancerous. Not particularly happy just to leave it, but is it worth getting a second opinion? It has been there for a couple of months now. Cost is a factor - we have insurance but it only seems to cover very basic stuff.