Definition of Cancer
Cancer, also called neoplasia, is the uncontrolled transformation of normal cells into abnormal ones, which usually form masses, invade nearby tissue and ultimately spread to other areas of the body. What causes cancer is still a mystery. Dogs can get many different types of cancer, each of which may show up with varying frequencies and degrees of severity. Many dogs with cancer get a lump somewhere on their body, which typically doesn’t seem to bother them. They may become weak, lethargic and easily fatigued, lose their appetite and lose weight, develop vomiting, diarrhea, enlarged lymph nodes, fever and lameness, and even collapse. Cancer is a leading cause of death in dogs, especially older dogs. Owners who think that their dog may have cancer should consult with a veterinarian right away. Early diagnosis always improves a dog’s chance of survival. Many treatment options are available if cancer is caught early.