When we think about cancer, we usually think of it as a human illness. But many people are surprised to learn that our pets-especially dogs and cats-face the same fight. In fact, cancer is one of the leading causes of death in older companion animals, just as it is in humans.
What's even more striking is that the risk factors we worry about for ourselves-things like secondhand smoke, certain chemicals in the home, poor air quality, and even processed food-can also increase cancer risk for our pets. Because they live in the same environment, drink the same water, breathe the same air, and often eat similar food ingredients, they're exposed to many of the same hazards.
This is where the One Health approach becomes so important. It recognizes that the health of people, animals, and our environment are deeply connected. When we work together-veterinarians, doctors, researchers, and pet families-we can better understand the patterns of cancer and how to prevent it.
Some key points to consider:
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Dogs can develop many of the same types of cancer as humans, including lymphoma, melanoma, and bone cancer. These illnesses affect them in ways that are heartbreakingly familiar-fatigue, pain, appetite loss-reminding us how closely their lives mirror our own.
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Cats may be exposed to harmful household chemicals through grooming-licking toxins off their fur that settle from sprays or cleaners.
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Living with pets gives us an early warning system: If our pets are getting sick from something in the environment, it may be affecting us, too.
Caring for a family member (human and/or non-human) with cancer is heartbreaking, but it's also a reminder of how closely our lives-and health-are intertwined. By reducing environmental risks, supporting cancer prevention for all species, and advocating for safer shared spaces, we can make a real difference.
Just like in people, lifestyle and environmental factors can contribute to a pet's cancer risk. Taking some simple, preventive steps can help protect their long-term health:
- Keep pets at a healthy weight
- Maintain a smoke free environment
- Limit sun exposure
- Stay up to date on wellness exams
@Rene Agredano, with Tripawds and @Brian Morvant, with CancerCare, thank you for sharing some information in our "Welcome Discussion" about your programs. Do you have any info, links or infographics you can share in this discussion, in case others missed it?
To all..... Have you or someone you know cared for a family member (human and/or non-human) with cancer? What changes did you make at home or in your lifestyle afterward?
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T' Fisher, Director of Operations
Program for Pet Health Equity
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