Masses must be sampled and evaluated under a microscope to determine what they are. The sooner we determine whether a mass is cancerous and should be removed, the better for your pet. Most skin and subcutaneous (under the skin) tumors can be cured when diagnosed early when masses are small.
I am Dr Sue Cancer Vet and I am on a mission to raise cancer awareness in dogs and cats, so we can diagnose earlier and save lives.
See Something When a skin mass is the size of pea or larger or has been present for 1 month,
Do Something Aspirate or biopsy, and treat.
No, not even the most experienced veterinarian can look at or feel a mass and know if it is cancer or not. Your veterinarian must perform an aspirate or biopsy to make an accurate diagnosis. Early detection saves lives.