What are the Common Dog Tumors and are they Cancerous?

Image for What are the Common Dog Tumors and are they Cancerous?

Not All Canine Tumors are Cancer

Dog tumors occur all the time.

In fact, there’s a 50/50 chance that your dog will develop a tumor of some type during his or her lifetime.

Seeing a tumor on your dog can be a very scary experience.

What is it?

Is it dog CANCER?

Of course, it is very important to have all lumps and bumps on your dog checked by your vet to make sure it’s not a dangerous tumor.

The good news is, roughly 80-90% of tumors are benign, non-invasive tumors and will not spread.

So, what exactly is a dog tumor?

Any lump, growth, or swelling on our dog is defined as a tumor.

Tumors exist in many different types, and dog tumors have many different causes.

Different Types of Dog Tumors

Tumors can be cancerous or noncancerous.

Benign tumors are non-invasive and do not spread.

Benign tumors are noncancerous

Malignant tumors spread and destroy surrounding tissues.

Malignant tumors are cancerous.

Skin Tumors

Skin tumors are the most common type of tumor and makeup almost 50% of the tumors found in dogs.

Skin tumors can be cancerous or non-cancerous.


A lipoma is a benign tumor, often called a “fatty tumor”.

Lipomas are basically conglomerations of fat just below the skin.

Lipomas are not painful and usually are not removed unless they are located in a place where they impede the dog’s movement in some way.


Cysts are noncancerous swellings caused by blocked hair follicles.

Basal Cell Tumors

Basal cell tumors look similar to “moles” that humans get. They are usually raised, hairless, and reddish in color.

Basal cell tumors are possibly malignant, but benign roughly 90% of the time.

Unfortunately, if malignant, basal cell tumors can spread to major organs and become fatal.

Mast Cell Tumors

Mast Cell tumors are the most serious that develop in dogs. These tumors often first appear as bumps under the skin.

Because Mast Cell tumors often look and feel like lipomas, they are often overlooked during an examination.

Mast Cell tumors are also very difficult to remove completely because they spread both locally and to internal organs.

Mast Cell tumors often invade the spleen, bone, liver and lymph nodes. If left untreated, Mast Cell tumors are often fatal.

Internal Cancer Tumors

Internal cancer is common in dogs just like in humans.

Dogs can develop mast cell tumors, stomach cancer, liver cancer, and practically any type of cancer heard of in humans.

Some other serious types of cancers afflicting dogs are breast cancer, throat cancer, lung cancer, testicular cancer, and bone cancer.

Looking for other ways to improve your dog’s health through traditional or alternative methods?

Powerful Tools for Overcoming Dog Cancer

You might not be aware, but many cancer-fighting tools are easy to get and use at home.

To realize your true cancer-fighting potential:

Get A Phone Consultation with One of Our TCVM Veterinarians

Follow Us :

Popular Posts

Image for What is TCVM?

What is TCVM?

When I first graduated from veterinary school, I thought I knew it all. I thought I knew everything about animals. Anatomy, physiology, drugs, surgery – learning about