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My dog has a hard lump on her cheek. Could it be a cancerous tumor?

Updated On September 23rd, 2025

Our dog developed a lump on her cheeck, its hard to touch and doesnt seem to cause pain and she is still eating but today when she was panting i noticed it lookes like a tumor like growth. What could it be?

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Answered By Jennifer Summerfield, DVM CPDT-KA

Veterinarian, Certified Dog Trainer

Published on June 7th, 2018

Oh dear! Poor girl. I'm afraid this does look very suspicious for some type of oral tumor, such as an oral melanoma or squamous cell carcinoma. A biopsy will be needed to get a definite diagnosis, so I would recommend taking her to the vet to have this checked as soon as you are able to. Surgery to remove the tumor as well as other treatment such as radiation or chemotherapy may be recommended, depending on the diagnosis.

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