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Best Foods & Supplements to Include in a Dog Cancer Diet

Best Foods & Supplements to Include in a Dog Cancer Diet

When Sora’s cancer returned after a failed electrochemotherapy treatment in November of 2017, I spent spent hours and hours researching cancer in dogs.

I stayed up late, my phone glowing under the sheets so as not to wake Dave, reading about the recommended foods and supplements for a dog cancer diet.

There are so many ideas and theories out there regarding foods for dogs with cancer that it’s overwhelming taking it all in and to know what truly works and what is “best.”

The truth is, we just don’t know. Cancer is a beast and there’s a reason medical professionals have yet to find a cure.

After all my research, I made a number of changes to Sora’s diet and added some supplements that I thought might boost her immune system.

Perhaps it was too late for Sora, given her age and the number of times the cancer had returned.

I continue to incorporate many of the recommendations below for my dogs now, with the hope of keeping cancer away in the first place.

had a number of supplements I regularly gave to Sora and I also made changes to her diet. I didn’t know whether they did anything for the canine anti cancer diet, as Sora passed away in 2018 after her fourth go with cancer.

My goal was to keep the cancer away as long as I could and supply my dog’s body with as many nutrients as possible. What I do know is that these supplements aren’t only good for dogs with cancer, many act as preventative measures with healthy dogs for avoiding cancer in the first place (but not necessarily preventing canine cancer from occurring in your dog), so I use them with Lalia and Riia.

And now for my disclaimer jargon: I am not a veterinarian nor am I a veterinary nutritionist.

I am a concerned dog mom who wants her dogs to be as healthy as possible and will do what she can to keep the cancer at bay through what I believe, based on my research to be the best foods and supplements.

These aren’t cures for cancer and they may not work with your pet’s particular condition. Talk to your vet before administering any of these supplements and foods to make sure they are right for your dog’s treatment plan.

Do Your own Research

I have no special training. I am not a veterinarian. I am not a nutritionist. I just do a TON of research.

Depending on the type of cancer your dog has, breed, age, etc, a different diet may work better than anything I’ve recommended in this article.

Do your own work and talk to your vet or consult a veterinary nutritionist before implementing anything into your dog’s system.

Best Food for Dogs with Cancer

Depending on what book or article you read, there will be a million different suggestions about what diet is best for cancer. Go with the one that feels right to you and works within your means.

One thing I noticed during our travels around the world is that most people don’t feed their dogs kibble. They take leftovers from the human meal, add more meat to it and give it to the dogs.

Dogs in certain countries may not live the same way our own pets do, but they are eating real food.

It is well documented that commercial pet foods are not always the healthiest option for our animals. They can contain:

  • fillers like corn and wheat
  • 4-D meat
  • “meat meals and meat by-products”
  • antibiotics
  • rancid and moldy grains
  • a whole host of other shocking ingredients

Switching to homemade dog food seems daunting, but it’s easy to make in large batches and freeze leftovers. I put everything in an InstaPot, set it to go, and have my dog’s food ready in an hour or so.

Store-bought Dog Food

There are plenty of high-quality store-bought options out there for our pets if the thought of home prepared meals for your dog is too much to handle.

Try and stick to dehydrated, freeze-dried, or store bought homemade foods, if you can. I’ve seen many sources that say stick to cooked meat for a dog cancer diet, as opposed to a raw food diet to avoid bacterial contamination and diseases.

Plant-Based Diet for Dogs

After picking up the most recent copy of Dr. Pictairn’s Complete Guide to Natural Health for Dogs & Cats, I decided to switch Sora to a plant-based diet.

It sounds ridiculous, I know. Hear me out.

I’ve used several iterations of this book over the years (my mom has a copy from the ‘80s!) and I was shocked to see that he was actually recommending a plant-based diet for dogs.

The theory is that since dogs are scavengers, they can adopt well to different diets. Further, they have evolved from their ancestors to become omnivorous, provided their meals are supplemented with the right nutrition.

I continued to learn more and joined a Facebook group called Vegan Dog Nutrition where I asked a lot of questions.

Fun fact: The oldest living dog in the world, Bramble was a plant-based Border Collie!

Ketogenic Diet for Dogs with Cancer

Raw Diet for Dogs with Cancer

Homemade Food for Dogs with Cancer

Plant-based isn’t for everyone, and that’s ok! Fortunately, there are a number of resources out there for dog parents that want to feed their dogs nutritious meals at home.

Reduce Sugars and Carbohydrates

Sora’s favorite thing in the world was bread. That dog would be lethargic and sick from vomiting and diarrhea for a couple days and the way I know she’s starting to feel better? She would pull like mad toward any piece of bread dropped on the ground. We had so many nicknames and puns for her, like her favorite band being the Grateful Bread.

Unfortunately for Sora, cancer has a sweet tooth and the cancer cells feed off of the sugars from carbohydrates and starches. Therefore, I made her meals using limited carbohydrates and low-sugar foods. This doesn’t mean that I didn’t give Sora and Laila a grain-free diet, I simply choose whole grains like brown rice or quinoa over starchier ones like white rice and wheat flours.

A few foods to avoid for dogs with cancer:

  • Corn
  • Potatoes
  • Beets
  • Sweet potatoes
  • Pineapple
  • Mangos
  • Wheat
Wild salmon oil is great for general health for dogs, and especially for adding to a dog cancer diet.

Wild Salmon Oil

Studies have shown that adding the omega-3 fatty acids found in fish oils may stall the growth and development of some tumors. Reduce the amount of omega-6 fatty acids, as the balance of the two can cause inflammation and suppress the immune system.

Look for wild, non-farmed Alaskan salmon oil. We use this one from Grizzly Omega Health. Wild Salmon oil is also great for dogs or those suffering with skin allergies or coat issues.


I know what you’re thinking: But garlic is poisonous for dogs!

In excessive amounts, yes, but in small amounts, it’s just fine.

I gave Sora one clove per day, grated on my Mircroplane (just be sure to break it up in the food. Dogs aren’t too keen on getting a large chunk of garlic in their mouths!).

Garlic contains anti cancer properties that reduce inflammation, is filled with nutrients like amino acids, zinc, potassium, manganese, selenium, and Vitamins A, B6, and C, and is an antioxidant that fights free radicals that can lead to diseases like cancer. Most importantly, for dogs with cancer, it boosts the immune system.

As a bonus, it can work as a natural method to keep fleas and ticks away!

We give Sora HempMy Pet tincture as part of her daily diet.


A friend recommended that we try CBD oil when he learned that Sora had developed cancer for a fourth time. Diving more into the research, I decided to give it ago. There’s not a ton of information out there about it’s effect on cancer, but what I did find seemed promising.

CBD oil has shown to force cells to commit suicide, prevent the growth of existing tumors, and inhibit metastasis.

After searching the web high and low, I finally landed on HempMy Pet. It’s organically-grown in Colorado, uses third-party testing, and integrates a full-spectrum single-source growth, which means that I’m getting the same product every time.

Now, I can’t tell what was going on inside Sora’s body, but CBD aided her with a host of other health issues, including:

  • Anxiety (including on crazy puppies!)
  • Pain and inflammation
  • Reduces nausea
  • Stimulates appetite
  • Seizures and epilepsy

Learn more with our honest review of HempMy Pet products.


I have been digging deep into medicinal mushrooms ever since Sora was diagnosed with cancer for the fourth time. I had heard about them in bits and pieces, but it wasn’t until I started researching that I learned just how freaking cool mushrooms are.

For an absolutely fascinating description of what mushrooms can do, not just for cancer, but for a whole host of other health and even societal issues, take a listen to this Paul Stamets interview on the Joe Rogan show. It’s long. Really long. But the time will fly by. There’s also a podcast you can download, if preferred.

Back to mushrooms and cancer.

In a blog post on the Dog Cancer Blog by authors of the Dog Cancer Survival GuideDemian Dressler, DVM and Susan Ettinger, DVM, Dip.ACVIM, write that “certain kinds of mushrooms have immune boosting and anti-cancer effects.” Mushrooms like Shiitake, Maitake, Reishi, Cordyceps, Coriolus, and Agaricus have been found to extend life in their cancer patients and allow them to maintain a high quality of living for periods well beyond expected.

Mushrooms do this in three ways: by stimulating and enhancing the immune system and helping with the toxic side effects from chemotherapy and radiation.

In 2012, the University of Pennsylvania conducted a study of 15 dogs with hemangiosarcoma by giving them coriolus versicolor, (turkey tail mushrooms), which have been used in Chinese medicine for ages. The research showed that the dogs taking this compound had the longest survival times ever reports of dogs with this type of cancer.

There are many different types of mushroom supplements out there and picking the right ones can be overwhelming. Here are a few that we highly recommend. Talk with your veterinary oncologist about dosage as it depends on the type of mushroom.

Our recommendations for mushrooms to add to a dog cancer diet:

Host Defense: My Community Multi Mushroom Capsules

Host Defense: Turkey Tail Mushroom Capsules

Only Natural Pet ShroomImmune Organic Mushroom Blend

Aloha Medicinals K9 Immunity

Turmeric paste is great for general health for dogs, and especially for adding to a dog cancer diet.

Turmeric Paste

I’ve been a fan of turmeric paste for years. Any time I’m training for a tough race, recovering from an injury, or just wanting an extra boost of anti-inflammatory, I drink Golden Milk and make lots of curries. And, it’s not just great for humans, but also for pets.

Turmeric is one of the world’s most widely used spices and its uses have been documented for thousands of years.

When purchasing turmeric, make sure the label says “100% Turmeric” or “Pure Turmeric.” I often buy mine in bulk from Indian stores. It’s much, much cheaper and the quality is the same as what you can find in a supermarket.

I simply made what is known as golden paste and added anywhere from ½ – 1 teaspoon to Sora’s meals. It’s super simple to make and can be used for humans as well! In order reap the benefits of the turmeric, a small amount of black pepper and an anti-inflammatory oil is required. There’s a great Facebook Group called Turmeric Users that has all kinds of information about turmeric, including uses, recipes, and more.

Here’s a great recipe for golden paste from Doug English, founder of the Turmeric Users group and also a veterinarian in Australia.

THE GOLDEN PASTE RECIPE (reprinted with permission)

  • 1/2 cup turmeric powder (125 mls) (60 grams)
  • 1 cup water (250 mls), and 1 cup in reserve if needed
  • 1/3 cup (70 mls) cold pressed Olive or Coconut oil
  • 2-3 teaspoons of freshly ground black pepper

Place turmeric and water in a small saucepan and bring to a boil. Then reduce to a simmer (a slow boil) and stir until you have a thick paste. This should take about 7 – 10 minutes and you will probably need to add additional water along the way. Let the mixture cool until it’s just warm to the touch, and then add the pepper and oil. Mix thoroughly (some people like to use a whisk). Vigorous beating isn’t necessary if you let the mixture cool a bit before adding the oil. Store in a clean glass jar and refrigerate. It isn’t absolutely necessary to sterilize the jar, but doing so will help prolong the life of the Golden Paste.

If you prefer not to make your own, the the Honest Kitchen has you covered. This one doesn’t contain black pepper, so I would recommend adding a bit of freshly ground pepper when using this product.

Recommended Books Filled withh

Dr. Pitcairn’s Complete Guide to Natural Health for Dogs and Cats (4th Edition) by Richard H. Pitcairn and Susan Hubble Pitcairn

This is my go-to source for home treatments for all of my pets. I’ve used many of the remedies written in this book and have had great success. Includes several easy homemade dog and cat food recipes.

The Dog Cancer Survival Guide: Full Spectrum Treatments to Optimize Your Dog’s Life Quality and Longevity by Demian Dressler and Susan Ettinger

This book is such an incredible resource for dogs with cancer. The authors have done so much research into the subject and offer a host of advice on dealing with cancer in dogs and advice on a dog cancer diet.

Plant-Based Recipes for Dogs | Nutritional Lifestyle Guide: Feed Your Dog for Health and Longevity by Heather Coster

Coster describes why dogs can thrive on a plant-based diet through research and studies. She includes several easy nutritionally-complete recipes to make at home for your dog.

Feed Your Best Friend Better: Easy, Nutritious Meals and Treats for Dogs by Rick Woodford

When Woodford’s own dog was diagnosed with cancer, he studied dog nutrition and prescribed his pup to a dog cancer diet that earned him four more years of life.

Pukka’s Promise by Ted Kerasote

This book is called the Omnivore’s Dilemma for dog people. Kerasote dives deep into the conflicting information about various meal choices for dogs, different training methods, and what to do about vaccinations.

This thorough book provides some of the most important information for anyone wanting to keep their dog as healthy as possible.

There are many foods that can benefit a dog cancer diet that help keep the disease at bay or possibly even send it into remission. Or, they may do nothing at all to fight the cancer, but will help in other areas like a healthy immune system, better digestion, and a shiny coat.  I am not recommending that you opt out of cancer treatment and only use holistic medicines. I was giving all of these to Sora in addition to her electrochemotherapy and radiation treatments. You know your dog, and you and your vet should come up with a plan together that determines what the best treatment options are to provide the optimal quality of life for your pup.


After Sora was diagnosed with cancer for a fourth time, I did a ton of research on what foods and supplements to include in a dog cancer diet.

Muriel Michalewicz

Monday 22nd of March 2021

I love all the info you’ve given for dogs with cancer. So I am just. A bit confused re how much and what mg of CBD to use. I have a small Maltese who is on Chemo and I am determined to help him get better... He was diagnosed w Intestinal Lymphoma two months ago and had a turmor removed and went on Chemo a week later and is doing great without lot of side effects so I was hoping to get the correct dosage of CBD for him. He weighs around 8.5 lbs. thank u for all your help.

Jen Sotolongo

Thursday 25th of March 2021

The dosage will be on the bottle based on your dog's weight. I would recommend emailing the company and asking how much to give (they often come in 250mg, 500mg or 1000mg) For a dog the size of yours, I'm guessing they might say 250mg, but may suggest going higher due to the cancer. I'm not an expert in this area, so best to leave it up to the companies to provide that important info!


Monday 8th of March 2021

What a thoughtful, helpful article this was! Many thanks for sharing it. I have a rescue border collie Aussie mix who has a compromised immune system from having been overimmunized at the dog rescue .Consequently she gets frequent bouts of diarrhea although she is vigorous, energetic and ready to go at a moment's notice. She's my walking and playing companion , as we walk about 2 to 3 miles a day and have an hour of ball tossing, hiking or frisbee catching. If I could I would spend the whole day outdoors with her ! I am 70 years old and just retired from a 50 year nursing career so now the fun and games will be even more frequent. I use Pitcairn's book as well as a home cooked diet .So wonderful to know that your Sora survived 4 episodes of cancer, a wonderful testament to your love and care for her! Made me cry. I look forward to following you on Pinterest.

Jen Sotolongo

Wednesday 10th of March 2021

I'm so glad that you found the article helpful! Your relationship with your Border Aussie mix sounds just lovely and I'm glad that you two have one another to enjoy the outdoors together!


Tuesday 26th of January 2021

PS :) Can you post the recipe you use for your dogs?

Jen Sotolongo

Friday 29th of January 2021

I've used recipes from the books mentioned in the article!


Tuesday 26th of January 2021

Hi, great article :) Just wondering if you can suggest a great site for plant based dog food? Books are great, but pricey!

Jen Sotolongo

Friday 29th of January 2021

Glad you enjoyed! I don't know of any good ones, which is why I bought the books! Maybe you can find them at your library and write down some of the recipes to save.


Monday 17th of August 2020

Hi Jen - Thank you for this info. Question for you, do you combine the golden paste, CBD oil and mushrooms in their food or do you space it out? Also, were you giving your dog pain meds? My dog was just diagnosed with a sarcoma and is currently on gabapentin.


Jen Sotolongo

Thursday 20th of August 2020

I added it all together, but definitely talk to your vet about that! We didn't give her pain meds long term, only during and after radiation treatment. I'm sorry to hear about your pup and hope that he recovers soon!