Dog Cancer – Causes, Symptoms and Prevention

Dogs have more chances (if not equal) to develop cancer than humans. One in three dogs said to develop cancer. Cancer being the reason for death of most dogs, it is more important for pet owners to have known the symptoms and signs to find cancer in your dog. In fact, some dogs won’t show any symptoms at least in earlier stages of cancer. So it’s not a bad idea to take your dog to a veterinarian if you find any unusual change in behavior – I mean don’t wait for the symptoms.


  • Brain Tumors
  • Bladder Cancer
  • Hemangiosarcoma
  • Lung Cancer
  • Lymphoma
  • Mast Cell Tumors
  • Mammary Cancer
  • Osteosarcoma (Bone Cancer)
  • Testicular

These are the different types of cancer that a dog may have. The most common cancer forms are skin, bone, breast, connective tissue, lymphoma and oral.


Even though, there are not many confirmed and or fixed causes known for the presence of cancer in dogs, the high exposure of sun, food preservatives & chemical additives, unnecessary vaccinations, improper breeding and some viruses may easily be the known causes for cancer in dogs.

Cause of Dog Cancer


The common symptoms and signs of dog cancer are loss of appetite and loss of weight, discharge made from any of the body opening and/or bleeding, difficulty in swallowing, chronic vomiting or diarrhea, difficulty in breathing and or urination.

Symptom of Dog Cancer


To prevent your dog from cancer, you will first have to prepare yourself for taking some extra care and time for your dog. Here, I listed below some of the recommended methods or to do (s) that can help prevent cancer in dogs.

Dog Cancer Prevention

Prevent your dog becoming overweight

As discussed earlier, loss of weight is a symptom of cancer and that doesn’t mean overweight help stay away from cancer. Never think of allowing your dog to get overweight. There are some (if not many) anti-cancer diets for dogs that are available online. Refer them and after confirming it with your dog’s veterinarian follow them properly. It can help avoid your dog getting overweight.

Avoid unnecessary vaccinations

Vaccinations being one of the causes for cancer, it’s nice to avoid any unwanted vaccinations for your dog. Consult your dog’s veterinarian to know the proper time-interval required between each vaccination. It depends upon the nutritional status, breed and health conditions of the dog. Most cases, dogs only need one vaccination for life.

Reduce dog’s exposure to Toxins

Less or no exposure to toxins means less chance of getting cancer. Don’t you like this?
Reducing the use of flea and tick preventive products, herbicides, smoke of tobacco, and household cleaners such as soaps, detergents and cleansers can really help prevent cancer risks.

Avoid spaying and neutering

Spaying and Neutering especially at an early age can increase your dog’s risk of getting cancer. The cancer type could be Osteosarcoma, which is a bone cancer. It can happen in both male and female dogs.

And thanks for reading. Hope you make some really good changes for the betterment of your dog and its health real soon. Good luck on it!

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