Cancer in Cats

What I Need to Know About Cancer in Cats

Did you know that cancers, like lymphoma, are even more prevalent in cats between the ages of two and six? Cats that have feline leukemia virus (FeLV) are also at significantly higher risks of developing cancer.1

Would you know if your cat was suffering from cancer? Many pet owners don’t, and we want to help.

Unlike in dogs, cats are not as divided by breed. This makes it more difficult to determine if certain kinds of cats are more prone to cancer than another. In fact, risk factors for cancer in cats are very similar to those in humans. Exposure to tobacco smoke, asbestos, prolonged sunlight, and lack of exercise have often been linked to increased risks of cancer development.2

Keeping your cat indoors can keep your cat healthy and prolong their life. Indoor cats have an average lifespan almost three times that of outdoor cats.3

Types of Pet Cancers In Cats

If your pet is displaying any symptoms of cancer or has been diagnosed with cancer, sort below by cancer type or tumor location to learn more about each cancer type and available treatment options for your pet. Click on the links for more specific information on treatment and real patient stories.

Head and neck tumors in cats

Brain tumors in cats

Thyroid tumors in cats

Extremity tumors in cats

Spinal tumors in cats

Pelvic canal tumors in cats

  • Anal gland adenocarcinomas in cats
  • Prostatic tumors in cats

Liver tumors in cats

Pancreatic tumors in cats

Lung tumors in cats

Kidney tumors in cats

Carcinoma/Epithelial in cats

  • Nasal/paranasal sinus
  • Squamous cell carcinoma
  • Basal cell
  • Tonsillar
  • Thyroid
  • Salivary gland
  • Ceruminous gland
  • Bronchogenic/non-small cell lung
  • Hepatocellular
  • Biliary
  • Pancreatic
  • Adrenal
  • Renal
  • Transitional cell of bladder/prostate/urethra
  • Prostatic
  • Anal gland
  • Perianal
  • Chemodectoma
  • Neuroendocrine carcinoma
  • Thymoma (epithelioid)

Sarcoma/Mesenchymal in cats

Round Cell in cats

  • Lymphoma
  • Thymoma (lymphoid)
  • Plasmacytoma
  • Multiple Myeloma
  • Melanoma
  • Mast Cell Tumor


  1. Diamondback Drugs. Accessed July 25, 2018, from https://www.diamondbackdrugs.com/what-kinds-of-cancers-are-most-common-in-cats/
  2. Morris Animal Foundation. Accessed July 25, 2018, from https://www.morrisanimalfoundation.org/sites/default/files/files/2018-03/00000-MBS_UTF_CancerChecklist_F1.pdf
  3. Pet Health Network. Accessed July 25, 2018, from http://www.pethealthnetwork.com/cat-health/cat-diseases-conditions-a-z/cancer-and-cats-what-every-pet-parent-should-know