HomeDog HealthCancerTop 15 Dog Breeds With The Highest Cancer Rates For 2025

Top 15 Dog Breeds With The Highest Cancer Rates For 2025

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Cancer is a devastating condition that affects millions of people each year. Unfortunately, it can also affect our beloved canine companions. Recent research indicates that cancer rates in dogs are on the rise, with one in four dogs developing some form of cancer during their lifetime. This growing trend has led to increased awareness and concern among pet owners who want to ensure the health and wellbeing of their furry family members.

The types of cancers seen most frequently in dogs vary depending on breed and age, with bone cancer being particularly common in large-breed dogs while lymphoma is more commonly found in small-breed dogs over 10 years old. Other forms of cancer such as mast cell tumors or melanomas may also be diagnosed at any age or breed type. Certain breeds have been found to have higher incidences of specific cancers due to genetic predispositions passed down through generations of selective breeding.



Regardless of the specific diagnosis, early detection is key for providing effective treatment options for pets battling this serious illness. Pet owners should be vigilant in monitoring their dog’s health and behavior, looking out for any unusual lumps, bumps, or changes in appetite, energy level or bathroom habits that could be early warning signs of cancer. Regular check-ups with a veterinarian are also critical for catching cancer in its earliest, most treatable stages.

Here are The 15 Dog Breeds With The Highest Cancer Rates. While all dogs have some level of cancer risk, understanding which breeds are predisposed can help owners take proactive steps in prevention and early detection. With greater awareness, more research funding, and advances in veterinary oncology, there is hope that cancer rates in dogs can start to decline in the years ahead. In the meantime, extra TLC and attentiveness to your canine companion’s health is the best medicine.



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Nova Scotia Duck Tolling Retrievers

Nova Scotia Duck Tolling Retrievers are an active and intelligent breed of dog, known for their hunting skills. They are also known as the “Toller” or “Little River Duck Dog”, and they have become a popular companion dog in recent years. Unfortunately, they have one of the highest rates of cancer among breeds within the canine family, which is a serious health concern for owners and veterinarians alike.



The most common form of cancer found in Nova Scotia Duck Tolling Retrievers is hemangiosarcoma, which develops in the endothelial cells that line blood vessels. This type of cancer is aggressive and spreads quickly throughout a dog’s body if not caught early enough. It most often affects the spleen, heart, skin and liver. Tollers are more prone to this cancer than any other breed, with a lifetime risk estimated at 1 in 5.

Other forms of cancer found in this breed include lymphoma, mast cell tumors, osteosarcoma (bone cancer), melanomas (skin cancers), and mammary gland tumors. These types can all be treated with surgery or chemotherapy depending on how far along it has progressed when diagnosed by a veterinarian. However, the prognosis is often guarded, as these cancers tend to be quite aggressive in Tollers.

While research into why certain breeds suffer from higher rates of cancer than others remains ongoing, there are some theories about why Nova Scotia Duck Tolling Retrievers may be especially prone to developing these diseases due to genetic factors present within their limited lineage. The breed was developed in the early 19th century in the Little River district of Nova Scotia in Canada, originating from a small gene pool of red decoy dogs. It’s thought that this lack of genetic diversity, coupled with certain physical traits the dogs have been bred for like their red coat color, could influence their cancer risk.



Owners of Tollers should be sure to schedule regular veterinary check-ups, avoid feeding foods that are high in carbohydrates which can fuel cancer growth, and monitor their dogs closely for any lumps, lameness, lethargy or other signs of illness. Breeders of Tollers are also working to improve the health of the breed through selective breeding and recommended screenings for cancers and other known health issues in the breed. By staying vigilant and proactive, Toller owners can help ensure these special dogs live as long and healthy of lives as possible.

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