If your pet has been diagnosed with cancer, you should know that cancer is a disease caused by the growth of abnormal cells in the body. (olddominionanimalhospital.com)
For instance, bigger canines apparently suffer from cancer more often, which could make sense; large dogs grow more than smaller breeds do, and cancer is rooted in abnormal cell growth. (mnn.com)
This type of cancer begins when abnormal cells in the breast ducts divide and multiply quickly. (healthline.com)