What Are The Signs Of Cancer In Dogs?

To sustain this free service, we receive affiliate commissions via some of our links. This doesn’t affect rankings. Our review process.

Signs of cancer in dogsMy wife and I have a dog, and I know the last thing in the world she wants to think about is our pup ever getting cancer. The thought of it can be so upsetting to us that we can blind ourselves and look the other way when it comes to our dogs’ health.

Sometimes the warning signs are obvious – like large growths on the outside of their bodies. Other times, cancers can show up in unexpected ways.

The best thing we can do for our dogs (and ourselves) is to mentally prepare for the possibility of trouble, so we can be proactive at the first sign of cancer in our dogs. Because our dogs can’t tell us what aches and what is irritating them, we have to watch for any odd behaviors or strange sensitivities. We have to make sure that we keep a watchful eye on the things they do every day and try to pick out what seems unusual. More often than not, we have premonitions about when something is bothering our pets, and a lot of times we are right.

What Are The Physical Signs Of Cancer In Dogs?

  • Large Growths – Large growths, like tumors, can begin to form and should be checked out immediately. Take your dog to your vet and have him examined as quickly as possible.
  • Smaller Lumps Under the Skin – Sometimes lumps can develop with age in our pets. You should not be concerned with any small bump under the skin, but monitor it. If it gets bigger, take him to your vet for a check. Also, if you notice any discharge or bleeding from that area, seek medical attention.
  • Odors – Dogs do some pretty gross things normally that will cause odors, but if you start to smell something unusual regularly, it could be an early sign of a problem. These new smells can sometimes come from tumors that could be cancerous.
  • Weight Loss – Weight loss over the course of a few months is often a sign of cancer cachexia. Dogs will lose fat and muscle at an equal rate, even if they are eating a normal amount of food.

What Are The Emotional Signs Of Cancer In Dogs?

  • Loss of Appetite – Though there can be many reasons your dog might not eat, one of them could be cancer. When you notice a loss of appetite, the first step should be to change your dog’s food. Bland meals like chicken and white rice will often get your dog eating again. If your dog shows a lack of appetite over an extended period of time, it might be wise to get him checked out.
  • Lethargy – Since dogs can’t tell us when something is bothering them, they do a great job of showing us. Many times, those signs will show up as lack of energy, despondence and an inability to get excited about things that usually make them happy.

Where Should I Look For Dog Skin Cancer?

Because our dogs are covered in hair, we sometimes forget that they can still be susceptible to different types of skin cancers. However, skin tumors are very prominent in dogs and should be examined immediately when they are first found. While we might think that our dogs are protected, we forget about areas like their noses and the pads on their feet. These areas are extremely sensitive and vulnerable to sun poisoning.

Skin cancers in dogs include melanoma, which shows up as lumps on the skin or around their mouths, squamous cell cancer and mast cell tumors. Mast cell tumors are the most common skin tumor in dogs and there is no known way to prevent this type of cancer.

Learn more about what to look for in this video:

What Treatment Is Available For Cancer In Dogs?

There are many dog cancer symptoms that have been mentioned already. Abnormalities in behavior or sudden growths under the skin or around the mouth and eyes are easily detectable signs of cancer in dogs. Be proactive and give your dog regular checks to make sure he is happy and healthy. When you’re petting him, feel for spots and monitor anything that seems unusual.

If your dog has cancer, there are things you can do. Talk to your vet, as every case is specific to the breed and current health of your dog. There are high-protein foods you can give your pup to help him battle weight loss, as well as medications that can help treat the minor forms of cancer to keep it from spreading. In severe cases, surgery can remove cancer completely from your dog, but make sure you talk to your vet so you understand the risks of such procedures.

Finally, treating cancer in dogs can be cost prohibitive. The average treatment plan (surgery, chemo and radiation) ranges between $6,000-10,000. Pet insurance can help defray this cost. If your dog is uninsured, you might consider pet insurance so that if (God forbid!) your dog does get cancer you will be financially able to help him battle this horrible disease.

Do you know of other signs of cancer in dogs?

About The Author:

Ryan Rauch graduated from Scripps School of Journalism in 2009 and has been writing for Canine Journal since 2012. Ryan enjoys writing and researching new and evolving home security measures, and has a passion for technology.

Disclaimer: Information regarding insurance company offerings, pricing and other contract details are subject to change by the insurance company at any time and are not under the control of this website. Information published on this website is intended for reference use only. Please review your policy carefully before signing up for a new pet health insurance contract or any other contract as your unique circumstances will differ from those of others who may be used for example purposes in this article.
Disclaimer: The information provided through this website should not be used for diagnosing or treating a health problem or a disease. It is not a substitute for professional care. If you have or suspect you may have a health problem, you should consult your health care provider.

Disclaimer: This website contains reviews, opinions and information regarding products and services manufactured or provided by third parties. We are not responsible in any way for such products and services, and nothing contained here should be construed as a guarantee of the functionality, utility, safety or reliability of any product or services reviewed or discussed. Please follow the directions provided by the manufacturer or service provider when using any product or service reviewed or discussed on this website.

Notify of
Oldest Most voted
Inline Feedbacks
View all comments
August 8, 2020 2:49 am

I have a 4-month-old puppy who has been vomiting the last few days and we are taking him to the vet. I have a bad feeling. He’s lethargic and I noticed he has a hard time swallowing too. Please pray for him. Thank you.

Patricia Sucro
May 1, 2020 11:35 pm

My Dog “Twinkie” (Buff Deer Chihuahua) has cancer in the stomach area we found out last Monday 4/27/20, the vet wanted us to start to give her 5 dif kinds of meds she said she doesn’t want to operate an take the cancer out due to her age @ 15 this July 2020 she will be 16 and her weight no less than 5lbs. So she decided to go another route with the meds here are the meds she’s taking, Amoxicillin, Enrofloxacin, Mirtazapine, Amphojel, & Metoclopramide, I have also been giving her CBD Oil aswell, and for feedings I been giving her Baby Food Beef with Beef Broth by Gerbers. She loves it, Also she does get up to go to the bathroom outside she walks all the way outside (fraily walking but she manages it). I know it probably only a matter of time my littly girl of 15 years will leave us. I will miss her dearly. When that day comes my heart will be breaking tremendously…. Mom and Dad will miss you everyday!!

Tristan Keifer
February 28, 2019 9:46 am

Well yesterday my dog stopped walking and he was whimpering so we took him to the vet and put him down and we all knew it was time for him to cross the rainbow bridge…we will always love and miss you Riley!♥

August 8, 2020 2:46 am
Reply to  Tristan Keifer

I’m so sorry for your loss.

Patricia Sucro
May 1, 2020 11:37 pm
Reply to  Tristan Keifer

Sorry for your lost Tristan I can only imagine your grief, its now been over a year for you I hope your doing better!!!

Kimberly Alt
February 28, 2019 11:39 am
Reply to  Tristan Keifer

I’m so sorry for your loss, Tristan.

Tristan Keifer
February 21, 2019 9:42 am

My oldest dog who is 15 has cancer and I’m scared that I’m going to come home and him already gone.

Regina Campbell Hutcherson
August 10, 2015 12:14 am

Well, me and a friend who also has a dog. When she had a pretty scary moment that something was really wrong with him, her husband had to call the vet and they told him to take him to the emergency hospital for dogs because he had a movement and was throwing up , and was very lethargic that morning. So ever since I thought about how I can get more medical services without the hefty fees out of pocket for my dog to get to stay or get healthy. I just don’t always have the money to get him the care he needs. Fella is a real lovable gentle giant. I just don’t know what I would do.

Tristan Keifer
February 21, 2019 9:44 am

Well throwing up is a sign of cancer and my dog has the same thing so I think I can help you.