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Signs of Cancer in Dogs and Cats
Veterinary & Aquatic Services Department, Drs. Foster & Smith
FAQ's on Dog Diseases & Conditions
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Q. What are the signs of cancer in dogs and cats?
A. According to the Veterinary Cancer Society, the 10 most common signs of cancer are:
  1. Abnormal swellings that persist or continue to grow.
  2. Sores that do not heal.
  3. Weight loss.
  4. Loss of appetite.
  5. Bleeding or discharge from any body opening.
  6. Offensive odor.
  7. Difficulty eating or swallowing.
  8. Hesitation to exercise or loss of stamina.
  9. Persistent lameness or stiffness.
  10. Difficulty breathing, urinating, or defecating.

These signs can also be present in many other diseases; they do not necessarily mean your dog or cat has cancer. Any dog or cat showing any of the above signs should be examined by a veterinarian.

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