8 :West Highland White Terriers
Lymphoma is the most common cancer in Westies. The breed is more susceptible to the cancer than most other dog breeds. Lymphoma makes the body form abnormal lymphocytes, which is a type of white blood cell.
The cancer has the ability to show up anywhere on the body since these blood cells are found everyone in the body. Although costly, Lymphoma is a very treatable form of cancer, and has a high success rate in Westies receiving chemotherapy at early stages.