Urinary bladder cancers are more common in female dogs, with Scottish Terrriers, West Highland White Terriers, Shetland Sheepdogs, and Beagles being overrepresented. Transitional cell carcinoma (TCC) is by far the most common type of bladder neoplasia (cancer) encountered in dogs.   Causes of...

Thyroid tumors account for 1.2 % to 3.8 % of all tumors in the dog and typically develop in older dogs with a median age of 9-11 years. There is no gender predisposition but Golden retrievers, Boxers, and Beagles are over represented. Most thyroid carcinomas are non-functional (meaning they don&rsqu...

Thymomas are rare tumors that arise from the epithelium (lining) of the thymus gland in the dog and cat. They are typically diagnosed in older animals, with the median age in dogs being 9 years and in cats it is 10 years. There is no breed predilection but medium and large dogs are overrepresented....

Soft tissue sarcomas (STS) make up a large category of tumors that arise from connective tissue. This category includes tumors of fibrous tissue, fat, smooth muscle, nerves, and lymphatic vessels. The diagnosis of soft tissue sarcoma includes fibrosarcomas, malignant peripheral nerve sheath tumors,...

Multiple Myeloma (MM) is a cancer of plasma cells, which are specific types of B-lymphocytes (white blood cells) which produce antibodies as part of the body’s immune system. Multiple Myeloma is a relatively uncommon cancer and there is no gender or breed predilection in dogs. The average age...

Mammary tumors (breast cancers) are the most commonly diagnosed tumor in intact female dogs older than 7 years of age.  Male dogs can also develop mammary tumors, but rarely. Several breeds are prone to developing mammary cancer including Poodles, English Spaniels, English Setters, and Terriers...

Chronic Lymphocytic leukemia (CLL) is a condition in which mature (i.e., "normal looking") lymphocytes (a type of white blood cell) accumulate in the body (including in the bone marrow and spleen).  This results in elevated circulating lymphocyte counts on CBC blood tests. CLL typically occurs...

Primary lung tumors (cancer originating in the lung) are uncommon in dogs and account for less than 1% of all tumors. It is most common in older dogs, but no specific breed or sex is predisposed. They are almost always malignant (invasive with the potential to spread). What causes this cancer in do...