My Dog's TumorI have made a terrible error in judgment. About 1 year ago my female rottie was 8 years. old. She developed a lump about the size of a walnut on her side. My vet stated that; 1) her age is against her for being a good candidate for surgery, 2) if we do operate to remove the tumor,we may find cancer everywhere inside her, and 3) it felt like soft tissue to him but he did leave it up to my decision.