Pet Cancer Prevention: How to Help Your Dog or Cat Stay Healthy

At Kali’s Wish Cancer Foundation, we understand how overwhelming a cancer diagnosis can be. That’s why we’re committed to providing families with pet cancer support and help to keep pets healthy and reduce their risk whenever possible. While we cannot prevent all cancers, there are steps we can take to help protect our pets.

Why Pet Cancer Prevention Matters

Each year, over 6 million dogs and nearly 6 million cats are diagnosed with cancer. According to The Veterinary Cancer Society, nearly 47% of dogs and 32% of cats will die from cancer. Pets over the age of 10 are especially vulnerable.

The veterinary community continues to study over 100 types of cancer in pets, exploring causes, risk factors, and treatments. While we don’t yet know every cause of cancer, research and practical steps can make a difference in prevention.

Genetics and Breed Considerations

Genetics play a significant role in a pet’s cancer risk. Certain purebred breeds have a higher incidence of cancer, including:

• Rottweilers

• Bernese Mountain Dogs

• Bouvier des Flandres

• Golden Retrievers

• Scottish Terriers

• German Shepherds

• Great Danes

• Labrador Retrievers

• Bichon Frise

For purebred pets, responsible breeding practices are critical. Reliable breeders track cancer incidence in bloodlines and use selective breeding to reduce hereditary risks.

Mixed-breed dogs and cats (except Siamese) generally have a lower genetic predisposition to cancer, but environmental and lifestyle factors still play a role.

Environmental Factors

Pets are exposed to many environmental carcinogens that can increase cancer risk, including:

• Cigarette smoke, diesel fumes, and exhaust

• Heavy metals like lead, arsenic, and mercury in air, water, or food

• Herbicides, pesticides, and industrial contamination

• Asbestos fibers and plastics containing vinyl chloride

• Benzene in clothing dyes

• Stress, which can weaken the immune system

Providing a safe, low-stress environment can help maintain a strong immune system and reduce risk.

Diet and Nutrition

Diet is an area where pet guardians have the most control. Choosing high-quality, natural foods and avoiding chemical additives can make a significant difference in cancer prevention.

Be cautious of ingredients and additives that may have carcinogenic potential:

• Chemical preservatives in some dry foods (BHA, BHT, TBHQ, propyl gallate, ethoxyquin)

• Carrageenan and BPA in wet foods or container liners

• Genetically Modified Organisms (GMOs)

Feeding your pet a natural, protein-rich diet, avoiding synthetic chemicals, and maintaining a healthy weight are key steps in supporting overall health.

Exercise and Lifestyle

Regular exercise not only keeps your pet at a healthy weight but also supports immune function and overall vitality. Combine activity with a low-stress environment and lots of love to help your pet thrive.

Additional Prevention Tips

Probiotics and certain supplements may help strengthen your pet’s immune system and support healthy gut function—both of which are linked to reduced cancer risk. Consult your veterinarian before adding any supplements.

The Bottom Line

While no approach guarantees prevention, taking proactive steps can help reduce risks. Pet cancer support and help starts with:

• Feeding a natural, high-quality diet

• Maintaining a healthy weight and exercise routine

• Minimizing exposure to environmental toxins

• Providing a loving, low-stress home

At Kali’s Wish Cancer Foundation, we’re here to guide families through prevention strategies, provide resources, and offer compassionate support to help pets live longer, healthier, and happier lives.