Tumor Symptoms in Dogs

Dogs can develop mast cell tumors from a variety of factors. These causes are both environmental, hereditary and from diets.

  1. Types

    • Mast cell tumors are either benign or malignant depending on if they are located above or below the skin.

    Locations

    • Mast cell tumors most likely appear on limbs, trunk and genital area. They are not commonly found on the neck or head of the dog.

    Characteristics

    • These tumors appear alone or in numbers. Generally mast cell tumors on dogs are smooth, bumpy or ulcerated. They can change in size daily.

    Bodily Functions

    • Dogs who have mast cell tumors can have accompanying symptoms aside from tumors. Dogs may be vomiting, have diarrhea and bloody urine and stool. There may also be abnormalities in the dog's blood.

    Skin Conditions

    • Another symptom of mast cell tumors in dogs is dry and itchy skin from the release of histamine from the tumors.