Monday, May 21, 2012

Top 10 Warning Signs of Cancer in Dogs and Cats

Via PRNewswire - May is Pet Cancer Awareness Month, a time to spread awareness of the symptoms of cancer in dogs and cats.

As cancer is the leading cause of death in cats and dogs, knowing the symptoms your pet may present if he develops the disease can help you and your vet diagnose and treat him sooner. Therefore, has pulled together the top 10 warning signs of cancer in dogs and cats:

1. Lumps and Bumps: Not every lump or bump is necessarily cancerous, but consulting with your vet is the only way to be sure. If the lump is growing or not resolving itself, contact your vet and he will do a biopsy to determine the contents of the bump.

2. Abnormal Odors: Foul odors from any of your cat or dog's orifices and/or body parts may be a cause for concern. Cancers of the mouth, nose, or anal regions can cause your pet to emit offensive odors.

3. Abnormal Discharges: Discharges such as blood, pus, vomit, diarrhea, and any other abnormal substance being excreted from your pet's body should be checked out by a veterinarian immediately. A bloated or distended stomach could also be a sign of internal discharge.

4. Non-Healing Wounds: Lacerations or sores that do not heal within a normal time range on the surface of your cat or dog's body may indicate infection, skin disease, and possibly cancer.

5. Weight Loss: Sudden weight loss in cats and dogs not on a diet can be an indicator of many diseases and illnesses. If coupled with another warning sign of cancer, you should contact your vet right away and inform him about your pet's symptoms.

6. Change in Appetite: While a lack of appetite in dogs and cats can be an indicator of many things, they never stop eating without a cause. Not necessarily a sign of cancer, a decrease in appetite can indicate an oral tumor, which would make it painful and difficult for your pet to eat and swallow.

7. Coughing or Difficulty Breathing: Although symptoms of heart and lung disease, coughing and abnormal breathing can also indicate cancer. This symptom will most likely occur if the cancer in your pet's body has metastasized into his lungs.

8. Lethargy and Depression: If your pet has cancer, there is a chance that he will suffer from depression and sleep more, become less playful, and be less willing to go for walks. Although lethargy or depression in dogs and cats can set in with any illness, it is commonly seen in pets that have cancer.

9. Changes in Bathroom Habits: Any changes in your pet's bathroom habits including difficulty using the bathroom, frequent bathroom use, and blood in urine or stools are potential warning signs that cancer has developed in your pet.

10. Evidence of Pain: Limping or other evidence of your pet in pain when he is active, or if the pain is too great for him to be active, can be indications of cancer of the bone.

While no one sign purely indicates cancer, a pet displaying two or more of these symptoms should be taken to the veterinarian for an exam so that he can be properly diagnosed and treated accordingly.


  1. We wish Autumn would've had some of these symptoms before it was too late. then when she stopped eating, the vet said she had a gum infection. Peeps finally took her to another vet who diagnosed the cancer but it had spread and was inoperable.

  2. Knowing these ten signs could be so helpful to pet guardians - thank you!

  3. It's so sad to have to think about, but it's important to keep these symptoms in mind. With my boys being 7.5 and 5 now, it's definitely something we'll keep an eye out for. Thanks for the great post, Vicki!