Anal sac adenocarcinoma Anal sac adenocarcinoma is an uncommon and aggressive malignant tumor found in dogs that arises from the tissue of anal sac.
Bladder cancer Bladder cancer is usually malignant in dogs. The most common type is transitional cell carcinoma.
Brain tumors Brain tumors can be either metastatic or primary in dogs. The incidence of primary tumors is 14.5 per 100,000 dogs at risk. Types include meningioma, astrocytoma, oligodendroglioma, and undifferentiated sarcoma.
Canine transmissible venereal tumor Canine transmissible venereal tumor is a tumor of the genitals. It is spread by sexual contact.
Fibrosarcoma Fibrosarcoma is a malignant tumor that most commonly occurs in the mouth in dogs, and less commonly in the skin, subcutis, and bones.
Gastrointestinal cancer Gastrointestinal cancer is uncommon in dogs. The most common type is lymphoma. Nonlymphomatous esophageal cancer is especially rare, the most common types being squamous cell carcinoma, adenocarcinoma, leiomyosarcoma, and osteogenic sarcoma associated with the parasite Spirocerca lupi. Nonlymphomatous stomach cancer is usually an adenocarcinoma, and nonlymphomatous intestinal cancer is usually polyps, adenomas, adenocarcinomas, leiomyosarcomas, and leiomyomas.
Heart tumors Heart tumors are rare in dogs. Types include hemangiosarcoma, fibrosarcoma, and fibroma.
Hemangiosarcoma Hemangiosarcoma is an aggressive tumor in dogs, usually affecting the heart or spleen and less commonly the skin.
Histiocytoma Histiocytoma is a benign skin tumor in dogs that sometimes regresses without treatment.
Insulinomas Insulinomas in dogs are insulin secreting tumors of the pancreas. The most common sign is hypoglycemia. They commonly metastasize to the liver.