Masses can be found on almost any part of your animal’s body, whether it be on the skin or in the body cavity. Masses can be benign or malignant (cancerous). When there is a mass, a veterinarian recommends to remove the mass if they think there is a chance of it being cancerous. After the mass is removed, a biopsy is taken and sent to a lab to identify if the mass was cancerous and if so, what kind. Removing masses can be a minimally or extensively invasive surgery depending on where the mass is. The amount of post-operative care also depends on where the mass was removed from.